Abstract: A method for determining a tilt of an image sensor surface plane in a camera in relation to a lens reference plane of the camera includes sending light onto the image sensor, receiving light reflected from the image sensor, identifying an interference pattern in the reflected light, identifying a feature of the interference pattern, and determining the tilt of the image sensor surface plane based on a position of the feature identified in the interference pattern.

Abstract: A calibration method in a camera with a P-Iris lens having an adjustable iris opening including the steps of adjusting the size of the iris opening between a first opening position and a second opening position, recording a plurality of images during the adjusting, analyzing the images, and determining an iris opening based on the analysis, that obtains a high quality image. The analyzing includes use of high frequency content in the recorded images.

Abstract: The present invention relates to digital cameras and in particular to positioning of image sensors in digital cameras. By providing a digital camera comprising a lens system, at least one image sensor which is attached to a sensor disc and an axle to which the sensor disc is attached and wherein the axle is configured to allow manipulation thereof for adjusting the tilt of the at least one image sensor, a simple solution is provided, enabling adjustment of the image sensor position in the digital camera.

Abstract: A digital video camera performs a method to improve the image quality of captured images in a video image stream. The method includes capturing a first subset of images, outputting the images of the first subset of images as the video image stream, moving an image sensor and/or a lens of the digital video camera from a respective normal position to a respective test position before capturing an image of a second subset of images. The digital video camera captures a second subset of images interspersed with the first subset of images, compares image quality of the first subset of images with an image of the second subset of images, and determines if the image of the second subset of images exhibits improved image quality as compared with the image of the first subset of images. If so, an image quality improvement operation is initiated.

Abstract: The invention relates to a calibration method in a camera with a P-Iris lens having an adjustable iris opening.