Circular Fisheye will work on a full frame camera. The image circle will be smaller showing all the barrel flare (right image).

CFE-cdlink-APS-C CFE_cdlink-FullFrame

CFE_cdlink-APS-C_2 CFE_cdlink-FullFrame_2

Circular Fisheye will work on micro 4/3 sensor cameras, on these cameras the top and bottom of the image will be slightly cut off (shown below).

CFE_lauren_micro43 CFE_lauren_micro43_2