Birch, Stewart, Kolasch & Birch, LLP
Converter
An auxiliary lens with which lenses are held within a mount has an afocal magnification of 0.8 and serves as a wide-angle conversion lens when attached to the front face of a taking lens with a small aperture. On the other hand, when attached to the front face of a taking lens with a large aperture, the auxiliary lens serves as a ratio conversion lens for an aspect ratio switchable camera which can switch an aspect ratio of the imaging area from 16:9 to 4:3.
Fuji Photo Optical Co., Ltd.
G
G02B
inventional
Yoshitaka
Mori