Canon has a long tradition to create digital cameras that are optimized for a specific application. For instance with the EOS Ra, Canon is offering a camera ideally suitable for Astrophotography , using a modified optical low-pass filter that provides increased sensitivity to IR light and captures more colors. Compared with a standard EOS camera, four times more light at 656nm is transmitted through the Canon EOS Ra's low-pass filter. This allows the distinct red tones of H-alpha emission nebulae to be rendered with incredible color and clarity.
Using their expertise, Canon has created a unique digital camera, dedicated for ophthalmic photography, for the best possible image: the EOS Retina.