Abstract: In an image reading apparatus, a sensor box to which a lens and an image sensor are fixed is moved with respect to a film original, so that focus adjustment can be reliably performed in reading an image recorded on any of film originals of different formats such as a sleeve-shaped film, a slide-mount film, a roll-shaped long film, etc.

Abstract: A plurality of film holding units capable of respectively holding a plurality of kinds of films having different formats are provided. The plurality of film holding units are each constructed to be attachable to and detachable from a joint portion provided on an attachment connected to a video camera. Such an arrangement allows for providing an image capturing system and film holding units for use in the system, capable of dealing with the plurality of kinds of films having different formats.

Abstract: In an image reading apparatus for reading an image recorded on a film, an amount of light being incident on a line sensor comprised in the apparatus and transmitted through the film is adjusted according to the image density of the film such that a relative speed between the film and the line sensor and the luminance of a lamp for irradiating light on the film are controlled.

Abstract: An image reading apparatus includes a carriage for holding a film holder holding a film, a motor for moving the carriage, and a housing for holding the carriage and the motor. While the motor moves the carriage, a first portion of the carriage is positioned by being slidably clamped by the housing, and a second portion which is in the opposite side of the first portion of the carriage is slidably positioned by a guide shaft. An image reading apparatus includes an image sensor for sensing an image from an original, a conveyor for conveying the original, a first board on which an image processing circuit for performing predetermined processing for an image signal output from the image sensor is mounted, and a second board on which a power supply circuit for supplying power to the image processing circuit is mounted.