Digital camera system having plural camera bodies including image pickup elements of different pixel pitches respectively and enabling use of a common interchangeable lens

摘要

A digital camera system including a plurality of digital cameras, each including a plurality of interchangeable-lens barrels having the same specification, a first camera body allowing the interchangeable-lens barrel to be attached thereto, or a second camera body. The first camera body includes an image pickup element having a first pixel pitch and a first optical unit including an optical low-pass filter with a thickness based on the pixel pitch. The second camera body includes an image pickup element having a second pixel pitch smaller than the first pixel pitch, and a second optical unit including a second optical low-pass filter. The second optical low-pass filter includes a crystal plate as a depolarization plate of a thickness so that the optical path length of the second camera body is substantially equal to the optical path of the first optical low-pass filter.