In contrast, [Joshua]’s DIY eye uses three plastic lenses from disposable film ... and these walls have to extend all the way into the camera body. The Canon A-1’s viewfinder mirror does ...

Naturally, such a lens isn't going to rival the optical quality of the best Canon RF or ... with Jaaksi's DIY creation, but ...

[Dan K] had just such a lens from Sigma, but wanted to get it working fully with a camera using the Canon EF lens fitting. Hacking ensued. The lens in question was a Sigma 15-30mm f/3.5-4.5 EX DG ...

hobbyist camera bodies. In Canon's lineup, some models like the EOS R7 have in-body image stabilization (a handy feature because none of Sigma's new lenses are optically stabilized). As usual ...