Abstract: A drive control apparatus includes a movable member; a driver configured to drive the movable member; a transmission device configured to transmit a driving force of the driver to the movable member; a first detector provided on the movable member side of the transmission device configured to detect a driving state of the movable member; a second detector provided on the driver side of the transmission device configured to detect a driving state of the driver; and a controller configured to control driving of the driver. The controller is configured to select, as information to be fed back, first drive information obtained from the first detector, or second drive information obtained from the second detector, based on the first drive information and the second drive information; and control the driving of the driver based on the selected one of the first drive information and the second drive information.

Abstract: A digital specimen manufacturing device comprises: a reduction processing unit which generates a reduced image by reducing a high resolution image of a first magnification into a second magnification image; an operation instruction unit which instructs the imaging unit to update the second magnification and recapture the low resolution image when information indicates the difference between the reduced image and the low resolution image is not within the allowable error range; and an image processing unit which obtains a third magnification, and outputs an image of the digital specimen by reducing the high resolution image into an image of the third magnification which an image magnification greater than the updated second magnification and smaller than the first magnification.

Abstract: Embodiments of the present disclosure related to a head mounted display (HMD) that enable adjustment of lenses for a particular consumer. In some example embodiments, the HMD enables up to three-degrees of freedom of lens alignment with a consumer's pupils. For example, the HMD includes an actuation device or rotatable disc, both of which are in slidable engagement with at least one elongated members. Ends of the elongated members are coupled to a mirror/lens such that actuation of the actuation device or rotation of the disc translates the elongated member along an axis, which is in general alignment with a pupillary distance (PD) of the consumer. Additionally, the elongated members include mirror/lens interfaces to which the lenses are coupled. The mirror/lens interfaces are slidably and rotatably coupled to the elongated members thereby providing additional degrees of freedom for movement of the lenses.

Abstract: An image capturing apparatus which captures an image of a subject with an image sensor having pixels each including a plurality of areas and generates a RAW image for each of the plurality of areas from a signal generated by the image sensor. The apparatus generates a first RAW image and a second RAW image from the RAW images, generates first image data by performing first development on the first RAW image, generates first RAW image data and second RAW image data by compressing the first RAW image and the second RAW image and performs second development on the first RAW image having a higher processing load than the first development. Second image data is generated by the second development on the first RAW image by using the second RAW image.

Abstract: A teleconverter, comprising: a master lens apparatus-side mount on which a master lens apparatus is mounted, a camera body-side mount on which a camera body is mounted, and a converter lens unit that has a generally negative refracting power for mounting the master lens apparatus thereon to obtain a lens system having a focal length longer than that of the master lens apparatus, wherein: the converter lens unit comprises a first lens group on the master lens apparatus side and a second lens group on the camera body side with an on-axis longest air separation interposed there-between, and does not include any lens group other than the first lens group and the second lens group, the first lens group has positive refracting power, the second lens group has negative refracting power, the first lens group consists of a first lens element having positive refracting power, and the second lens group comprises, in order from an object side to an image side along an optical path, a second lens element having negativ

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a rear lens group including one or more lens units. The distance between adjacent lens units changes during zooming. The first lens unit is closer to the object side at a telephoto end than at the wide-angle end. The second lens unit includes a first negative lens, a second negative lens, and a third negative lens in this order from the object side. The focal lengths of the zoom lens at the wide-angle end and at the telephoto end, the focal length of the first lens unit, and the focal length of the second lens unit are appropriately set based on predetermined mathematical conditions.

Abstract: A security camera system using a power supply by an electromagnetic induction scheme comprises; a CT core detachably installed on a power transmission and distribution line and producing electric power by the electromagnetic induction scheme and; a power transformer for transforming an AC power generated from the CT core to a DC voltage; a camera module for recording a security video using power supplied by the transformer; a wireless communication module for transmitting an audio and a video data captured by the camera module; and a stabilizer module for correcting the shake of a video when capturing a security video. The security camera system provided with the power supply device as a main power supply thereto generating an electric power by the electromagnetic induction scheme using the current flowing around the power distribution line saves time and cost related to power supply construction so that the productivity may be improved.

Abstract: An image including a chart displaying graphical elements may be received or captured by a computing device. The graphical elements, for example, may be bars of a bar chart, or components of a pie chart. Techniques described herein may determine values for the graphical elements. Techniques described herein may also analyze the arrangement of the graphical elements and other contextual information to determine a chart type. The generated values may be arranged into an editable chart and/or an editable data structure based on the chart type. Touch-enabled gestures may be applied to the data structure to allow a user to modify, save or otherwise process the data structure.

Abstract: A method for determining a point spread function (PSF) of a camera, comprising: displaying on a display at least two images comprising visual features, elements having a different optical intensity, and a test pattern; acquiring the images using the camera; determining a coordinate transformation using the image comprising the visual features and its corresponding acquired image, the coordinate transformation for aligning together a coordinate system of the camera and a coordinate system of the display; aligning the acquired image comprising the elements having a different optical intensity using the determined coordinate system and determining a difference of intensity between the displayed image comprising the elements having a different optical intensity and the corresponding acquired image; aligning the acquired image comprising the test pattern and correcting an intensity of the acquired image comprising the test pattern, thereby obtaining a corrected image; and estimating a PSF using the corrected image

Abstract: The present disclosure relates to a lens system comprising a first lens group and a second lens group from an object side to an image side successively; wherein, the first lens group comprises a first lens, a second lens and a third lens from the object side to the image side successively; the second lens group comprises a fourth lens, a fifth lens and a sixth lens from the object side to the image side successively; the first lens has a positive focal power and the second, the fifth, and the sixth lens have a negative focal power, and the object side surface of the first and the second lens are convex, the image side surface of the fifth lens is convex, the object side surface of the fifth and the sixth lens are concave, and the image side surface of the second and the sixth lens are concave.

Abstract: A lens unit L100 is removably mounted on an image pickup apparatus generating control information used for a vibration control that vibrates a correction lens L105 and moves a vibration center of the correction lens L105, includes an image pickup optical system including a magnification varying lens L102 and the correction lens L105, a storage unit storing first information indicating a relation between positions of the magnification varying lens L102 and the correction lens L105, and a lens controller performing a predetermined control in which the correction lens L105 moves in accordance with the movement of the magnification varying lens L102, and the lens controller sends information relating to the magnification varying operation to the image pickup apparatus, and overlaps the vibration control of the correction lens L105 based on the control information in accordance with the information relating to the magnification varying operation with the predetermined control.

Abstract: A projection optical system includes: a plurality of lenses; a lens frame that holds at least one lens of the plurality of lenses; a first diaphragm provided on the light incident side of the lens frame; and a second diaphragm provided on the light exiting side of the lens frame.

Abstract: An image pickup apparatus includes an image sensor, and a controller configured to drive a focus unit so that a first position is focused, to acquire first information on a first refocusable range that is available in an image that is captured while the first position is being focused by the focus unit, to acquire second information on a second refocusable range that contains the first position, to acquire information on a second position on which the focus unit is to be focused so as to provide the second refocusable range using the first information and the second information, and make the image sensor capture an image while the second position is being focused by the focus unit.

Abstract: An imaging apparatus according to the present disclosure includes: a focus lens, a motor for driving the focus lens, an origin detection unit for detecting an arrival of the focus lens at a reference position, a drive amount detection unit for detecting an amount of drive of the focus lens driven by the motor, and a controller for recognizing a position of the focus lens based on an output from the drive amount detection unit and for controlling the position of the focus lens. The controller receives a detection signal from the origin detection unit during driving the focus lens, and determines an occurrence of step-out of the motor based on both the received detection signal and the position of the focus lens recognized by the controller.

Abstract: An image pickup apparatus that performs focusing and zooming by driving lenses and enables focusing that reduces variations in the angle of view without making any modifications to an optical system. An image pickup optical system has a first lens that changes the shooting angle of view, and a second lens that changes a focus position for a subject. An image of the subject formed by the image pickup optical system is converted into an electric signal. The first lens and the second lens are driven. The amount of wobble for use in controlling the focus position for the subject is set according to drive characteristics of at least one of the first lens and the second lens.

Abstract: This invention can develop a part of RAW image data and display the developed part of RAW image data with a result of processing, even if the part of the RAW image data refers to other part of the RAW image data. An image processing apparatus obtains an output area of RAW image data to be displayed on a window and a reference area of RAW image data to be pasted to the output area of the RAW image data. The apparatus develops the output area of the RAW image data and the reference area of the RAW image data. Then, the apparatus pastes a development result of the reference area of the RAW image data on a development result of the output area of the RAW image data. After that, the apparatus executes display processing to the development result of the output area of the RAW image data.

Abstract: A method and apparatus for approving multimedia data, including: receiving second multimedia data of a second resolution; selecting a block of the second multimedia data; and requesting a corresponding block of first multimedia data, to the selected block of the second multimedia data. Furthermore, the method includes receiving the corresponding block of the first multimedia data of a first resolution; and approving the second multimedia data at the server apparatus in response to evaluating the received block of the first multimedia data.

Abstract: An imaging system of the present invention comprises a lens unit having a barrel section that contains a photographing optical system, and an operating section provided on the barrel section, and a camera body having an imaging section for converting a subject image formed by the photographing optical system into electrical signals, and a display section for displaying the subject image based on the electrical signals, wherein the lens unit has a transmission section for transmitting information relating to the operation section, and the camera body has a receiving section for receiving information relating to the operating section that has been transmitted from the transmission section, and an association section for displaying the information relating to the operation section that has been received by the receiving section on the display section, and associating information relating to the operating section with functions of the camera body.

Abstract: The description relates to creating a window-like experience during video communication scenarios. One example can include a spatial light deflector including a steerable array of light deflecting elements. The example can also include a wedge device positioned relative to the spatial light deflector. The example can also include a camera positioned at an end of the wedge device to receive the captured light.

Abstract: Provided is a zoom lens (ZL) including, in order from an object along an optical axis: a first lens group (G1) having negative refractive power; a second lens group (G2) having positive refractive power, and a third lens group (G3) having a positive refractive power. At least the first lens group (G1) and the second lens group (G2) are moved along the optical axis upon zooming from a wide-angle end state to a telephoto end state, so that the distance between the first lens group (G1) and the second lens group (G2) decreases, and the distance between the second lens group (G2) and the third lens group (G3) increases, the first lens (G2) includes one positive lens, and the second lens (G2) includes one negative lens.

Abstract: A system embodiment may include at least one camera wearable, at least in part, by a human operator. The at least one camera may have, when enabled, at least one active field of view that may be captured by the at least one camera in response, at least in part, to image capture actuation by the human operator. This embodiment also may include a viewfinder wearable, at least in part, on a head of the human operator. The viewfinder may provide to the human operator, prior to the image capture actuation, at least one visual indication of the at least one active field of view of the at least one camera. The at least one visual indication may be displayed in at least one central field of vision of the human operator. Of course, many alternatives, modifications, and variations are possible without departing from this embodiment.

Abstract: A wide-angle lens may include six or more plastic lenses arranged in a plurality of groups. The plurality of groups may include a fourth group comprising a first lens having an aspherical image side and a second lens having an aspherical object side. The aspherical image side of the first lens may be cemented to the aspherical object side of the second lens.

Abstract: Systems and methods are provided for viewing portions of a very high-resolution image on a client device. The systems and methods provide for dynamic establishment of hierarchically organized contexts corresponding to regions within the image. The context hierarchy supports image inspection and analysis at increasing resolution levels for successively smaller regions. A context's region can be viewed at a base resolution appropriate for that context, while areas of interest within the context can be examined in more detail in higher resolution. To view areas of interest at resolution levels above the range for a given context, a child context can be established for a smaller region. The client device user can navigate from one area within the image to another by traversing previously established contexts and establishing new contexts.

Abstract: An endoscope system including: an optical endoscope including a fiber bundle that transmits an optical image; a camera head including an image pickup device; and a video processor including a moiré elimination section, a control section and an enhancement processing section, in which the moiré elimination section uses a processing circuit of the enhancement processing section as a processing circuit of itself by replacing a filter coefficient, the camera head includes a first identifier, the video processor includes a detection section that detects the first identifier, and the control section causes the moiré elimination section to perform moiré elimination processing corresponding to a detection result of the first identifier.

Abstract: A zoom lens consists of, in order from the object side, a positive first lens group which is fixed relative to the image plane during magnification change, a negative second lens group which is moved during magnification change, a negative third lens group which is moved during magnification change, a positive fourth lens group which is moved during magnification change, and a positive fifth lens group which is fixed relative to the image plane during magnification change, wherein magnification change is effected by changing all distances between the adjacent lens groups, the fifth lens group consists of, in order from the object side, a positive front group, a negative middle group, and a positive rear group, image stabilization is effected by shifting only the middle group in directions perpendicular to the optical axis direction, and the condition expression (1) is satisfied: 0.20<FGr3/FGr<0.52??(1).

Abstract: A variable-magnification optical system has five lens groups, namely, from object side, positive, negative, positive, positive, and negative lens groups, and achieves magnification variation by varying all axial distances between the lens groups. Focusing is achieved by moving the fourth lens group in optical axis direction. Vibration correction is achieved by moving all or part of the fifth lens group perpendicularly to optical axis. Fulfilled are formulae 4.0<|f1/f2|<6.0, 1.0<f4/f1<1.5, and 2.0<|f4/fv|<4.0, f1 representing a focal length of the first lens group, f2 a focal length of the second lens group, f4 a focal length of the fourth lens group, and fv a focal length of the vibration correction group.

Abstract: When a first instruction operation is performed by a user, a controller changes a zoom position in a wide-angle direction. When a second instruction operation is performed by the user, the controller changes the zoom position, which has been changed in the wide-angle direction, in a telephoto direction. In association with the change in the zoom position in the telephoto direction, the controller causes the image capture unit to perform automatic image capture.

Abstract: A remote-control apparatus which remotely controls an image capturing apparatus, comprises a communication unit configured to communicate with the image capturing apparatus; a reception unit configured to receive video data and a parameter obtained at the time of shooting of video from the image capturing apparatus via the communication unit; a display unit configured to display the video data; a designation unit configured to designate an area of the video displayed by the display unit; an acquisition unit configured to acquire predetermined information from video data of the designated area; and a transmission unit configured to transmit the predetermined information and the parameter to the image capturing apparatus via the communication unit.

Abstract: Image defocus blur estimation techniques are described. In one or more implementations, fixed spatial frequencies that are usable to analyze an image for blur are selected. The selected spatial frequencies are input to a function used to determine frequency responses for pixels of the image. The frequency responses indicate a response of the pixels around a given pixel to the selected spatial frequencies. The spatial frequencies that are selected may be limited to spatial frequencies having a frequency magnitude from a set of discrete values. The discrete values may, for instance, range from a minimum frequency magnitude to a maximum frequency magnitude, and be spaced apart by a frequency magnitude increment. A number of frequencies that are selected at each magnitude may also be based on the frequency magnitude increment.

Abstract: An electronic device including a first camera configured to capture a first front image; a display module configured to display a preview screen of the first front image obtained by the first camera; and a controller configured to receive a focus input designating an object included in the preview screen is to be focused, receive an input for performing continuous shooting, and control the first camera to capture a plurality of images in different zoom levels while maintaining a focus on the designated object intact based on the received input for performing the continuous shooting.

Abstract: For cameras that capture several images in a burst mode, some embodiments of the invention provide a method that presents one or more of the captured images differently than the remaining captured images. The method identifies at least one captured image as dominant image and at least another captured image as a non-dominant image. The method then displays each dominant image different from each non-dominant image in a concurrent presentation of the images captured during the burst mode. The dominant images may appear larger than non-dominant images, and/or appear with a marking that indicates that the images are dominant.

Abstract: An imaging lens includes: a movable lens group with total positive refractive power, including first and second sub lens groups; and an ever-fixed lens group that is ever-fixed. The imaging lens has first and second focusing modes for focusing operation in first and second focus ranges, respectively. The first focus range covers from an object at an infinite distance to an object at a first finite distance, and the second focus range covers from an object at a second finite distance shorter than the infinite distance to an object at a third finite distance shorter than the first finite distance. The first sub lens group is configured to be fixed and the second sub lens group is configured to travel, during each of the first and second focusing modes. Traveling of the movable lens group toward object plane allows switching from the first to second focusing modes.

Abstract: Various techniques are disclosed for providing systems for providing alignment guide information to selectively direct a visible light source to substantially align the visible light source with a desired subject and to project a visible light beam substantially on the desired subject. For example, a system may include a small form factor infrared imaging module to capture thermal images of a scene, which may be received by a processor to generate alignment guide information such as a user-viewable image of the scene, a user-viewable cue, and a framing reticle. In another example, such a system may be implemented as a camera. In yet another example, such a system may be implemented as a spotlight.

Abstract: A zoom lens includes, in order from the object side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit having a positive refractive power. The first lens unit includes a negative lens and a positive lens. The zoom lens satisfies the following conditional expression (1): ?d13/ft<0.4??(1) where ?d13 is the total sum of the thickness of the lenses included in the first to third lens units of the zoom lens on the optical axis, and ft is the focal length of the entire zoom lens system at the telephoto end.

Abstract: A photographing method includes (a) setting a subject as a target subject; (b) determining, automatically, at least one of whether the target subject is at a periphery of a photographer's photographing range and whether the target subject is leaving the photographer's photographing range; and (c) responsive to one of a determination that the target subject is at a periphery of the photographer's photographing range and a determination that the target subject is leaving the photographer's photographing range, cropping, automatically, an image include the target subject using a digital zoom operation.

Abstract: A lens unit L100 is removably mounted on an image pickup apparatus generating control information used for a vibration control that vibrates a correction lens L105 and moves a vibration center of the correction lens L105, includes an image pickup optical system including a magnification varying lens L102 and the correction lens L105, a storage unit storing first information indicating a relation between positions of the magnification varying lens L102 and the correction lens L105, and a lens controller performing a predetermined control in which the correction lens L105 moves in accordance with the movement of the magnification varying lens L102, and the lens controller sends information relating to the magnification varying operation to the image pickup apparatus, and overlaps the vibration control of the correction lens L105 based on the control information in accordance with the information relating to the magnification varying operation with the predetermined control.

Abstract: The information about an interchangeable lens is acquired, and the size of an image capture range, which is the range corresponding to a capture image in an optical image, is calculated based on the information about the interchangeable lens. When the image capture range is smaller than or equal to a range to be shown by the angular field of the optical image, a first image showing the image capture range in the optical image is displayed on a display device, and when the image capture range is larger than the range to be shown by the angular field of the optical image, a second image different from the first image showing the image capture range in the optical image is displayed on the display device such that the second image is superimposed on at least either of the four corner vicinities and four side vicinities of the optical image.

Abstract: The zoom lens includes at least, in order from an object side: a first lens group G1 having positive refractive power; a second lens group G2 having negative refractive power; a third lens group G3 having positive refractive power; a fourth lens group G4 having negative refractive power; and a fifth lens group G5 having negative refractive power. In the zoom lens, focusing from infinity to a proximity of object is achieved by movement of just fourth lens group toward an image focusing side and is characterized in Satisfaction of expressions below: [Expression 1] 2.1<?rt<3.5??(1) ?1.80<?2t<?0.94??(2) where “?rt” is composite lateral magnification at a telephoto end of lens groups locating closer to the image focusing side than the third lens group at infinity focusing, and “?2t” is lateral magnification at a telephoto end of the second lens group at infinity focusing.

Abstract: An imaging device includes a first pixel array arrange to capture a first image and a second pixel array arranged to capture a second image. The first pixel array and the second pixel array face substantially a same direction. The imaging device also includes shutter control circuitry which is coupled to the first pixel array to initiate a first exposure period of the first pixel array to capture the first image. The shutter control circuitry is also coupled to the second pixel array to initiate a second exposure period of the second pixel array to capture the second image. The imaging device also includes processing logic coupled to receive first pixel data of the first image and coupled to receive second pixel data of the second image. The processing logic is configured to generate at least one image using the first pixel data and the second pixel data.

Abstract: A data processing apparatus includes a browsing portion to display a display area of content on a display portion, and a gesture event determining portion to determine a gesture event on the basis of position(s) designated by a user on a display surface of the display portion. The browsing portion includes a display area determining portion to determine a display area on the basis of the gesture event, a capture area determining portion to determine a capture area including the display area, a captured image generating portion to generate a captured image corresponding to the capture area on the basis of the content, a temporary memory control portion to temporarily store the captured image, a display image generating portion to generate a display image corresponding to the display area on the basis of the captured image, and a display control portion to display the display image on the display portion.

Abstract: During zooming from the wide angle end to the telephoto end, the distance between the first lens unit having a positive refractive power and the second lens unit having a negative refractive power, the distance between the second lens unit and the third lens unit having a positive refractive power, and the distance between the third lens unit and the fourth lens unit having a negative refractive power vary. In zooming from the wide angle end to the telephoto end, the first lens unit is located closer to the object side at the telephoto end than at the wide angle end. The first lens unit consists of two lenses including a negative lens and a positive lens. The first lens unit has at least one aspheric surface in the optical path. The zoom lens satisfies the following conditional expression (1): 0.5<(LTLt/?rear)/FLG1<1.0??(1).

Abstract: A dual-mode light field camera or plenoptic camera is enabled to perform both 3D light field imaging and conventional high-resolution 2D imaging, depending on the selected mode. In particular, an active system is provided that enables the microlenses to be optically or effectively turned on or turned off, allowing the camera to selectively operate as a 2D imaging camera or a 3D light field camera.

Abstract: According to an aspect of the present invention, when driving one optical member at a time, the control part sets a first current equal to or more than a rated current of the driving part and equal to or less than a maximum supply current from the image-capturing device body, or a second current less than the rated current of the driving part, for the one optical member as the current limit value, and controls the driving part so that first drive for driving the optical member for a first time by allowing the first current to serve as the current limit value, and second drive for driving the optical member for a second time by allowing the second current to serve as the current limit value after the first drive being performed, are repeated until drive of the optical member to the drive target is completed.

Abstract: Provided is a zoom lens, including, in order from object side to image side: first and second lens units having positive and negative powers, respectively; and three or more lens units. An interval between adjacent ones of the lens units is changed during zooming. An N-th lens unit, where 5?N holds, counted from object side has negative refractive power, and moves to image side during focusing from infinite object to a close distance object. The N-th lens unit includes, in order from object side to image side, negative, positive, negative, and positive lenses. A focal length (fN) of N-th lens unit, a focal length (fT) of an entire system at telephoto end, a distance (o1N) from a surface vertex of N-th lens unit on object side to a front principal point position of N-th lens unit, and a length (dN) on optical axis of N-th lens unit are appropriately set.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a rear lens group including one or more lens units. An interval between adjacent lens units is changed in zooming, the first lens unit is moved closer to the object side at a telephoto end than at a wide-angle end. The first lens unit includes at least four lenses. An Abbe number and a material of a positive lens included in the first lens unit satisfy predetermined values. And, a focal length f1 of the first lens unit, and an amount of movement M1 of the first lens unit at zooming from the wide-angle end to the telephoto end are appropriately set.

Abstract: A zoom lens includes, in order from an object side to an image side, a first lens unit having positive refractive power, a second lens unit having negative refractive power, a third lens unit having positive refractive power, and a rear lens group including one or more lens units. The distance between adjacent lens units changes during zooming. The first lens unit is closer to the object side at a telephoto end than at the wide-angle end. The second lens unit includes a first negative lens, a second negative lens, and a third negative lens in this order from the object side. The focal lengths of the zoom lens at the wide-angle end and at the telephoto end, the focal length of the first lens unit, and the focal length of the second lens unit are appropriately set based on predetermined mathematical conditions.

Abstract: A light field data acquisition device includes optics and a light field sensor to acquire light field image data of a scene. In at least one embodiment, the light field sensor is located at a substantially fixed, predetermined distance relative to the focal point of the optics. In response to user input, the light field acquires the light field image data of the scene, and a storage device stores the acquired data. Such acquired data can subsequently be used to generate a plurality of images of the scene using different virtual focus depths.

Abstract: A zoom lens including: a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power in this order from an object side to an image side. During zooming, the lens units move such that an interval between adjacent lens units varies. The third lens unit includes at least two positive lenses. A partial dispersion ratio (?gF3P) of a material and the Abbe number (?d3P) of a positive lens included in the third lens unit satisfy the following conditional expressions, ?gF3P?(?1.665×10?7·?d3P3+5.213×10?5·?d3P2?5.656×10?3·?d3P+0.737)>0 50.0<?d3P<100.0.

Abstract: A zoom lens comprises a first lens unit G1 having a positive refractive power, a second lens unit G2 having a negative refractive power, and a plurality of lens units G3 and G4. Zooming from a wide angle end to a telephoto end is carried out by changing a distance between the lens units. One of the first lens unit G1 and the second lens unit G2 has, or both the first lens unit G1 and the second lens unit G2 have a specific arrangement.

Abstract: Provided is a zoom lens including, in order from an object side to an image side: a first lens unit having a positive refractive power which does not move for zooming; a second lens unit having a negative refractive power which moves during zooming; and an N-th lens unit having a positive refractive power which does not move for zooming and is arranged closest to the image side. In the zoom lens, the N-th lens unit includes in order from an object side: a first sub-lens unit; and a second sub-lens unit which is movable, and a lateral magnification at a wide angle end of the N-th lens unit and a lateral magnification at a wide angle end of the second sub-lens unit of the N-th lens unit when an axial ray enters from infinity in a state in which focus is at the infinity are appropriately set.