[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 ...

A Canon EF-S dual fisheye lens; one of the few native RF-S lenses from Canon, but not exactly a general-purpose optic | ...

The new camera's sensor, as used in the EOS C400 ... It can also be adapted to Canon EF and to PL-mount lenses, complete with ...

Canon's DSLR 24-70mm F2.8 topped this year's most-rented list but the number of EF-mount rentals as a whole fell. Image: Canon Camera and lens rental house LensRentals has published its annual top ...

But when [Loudifier] needed an extension tube to do extreme close-ups with a wide-angle lens on a Canon EF-M camera, it needed to be small…really small. The final 3D printed extension provides ...