Photographic Notes 62—— Relationship between Photosensitive Elements and Lens

Even if lenses with the same focal length are used, the viewing angle is different because of the different photosensitive elements on the camera. The sizes of photosensitive elements used in digital cameras are: 35mm Quan Huafu, APS-H format, APS-C format and 4/3 format. The difference is:

In the same position, shooting with a lens with the same focal length, the larger the size of the photosensitive element, the wider the viewing angle and the more complete the shooting.

Digital special lenses can only correspond to digital SLR cameras with photosensitive elements smaller than those of Quan Huafu. When shooting with a digital special lens on a full-frame camera, the peripheral part of the picture will be blocked, which is caused by the fact that the lens imaging circle of the digital special camera is smaller than the picture of a 35mm full-frame camera.