Top picks for 2025 - Discover the best lens choices for your EOS R camera for superior image quality and the latest ...

[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 ...

The fixed lens on this camera meant no zoom was possible. [Bastiaan] decided to address this shortcoming by building a Canon EF Lens Mount. The resulting build looks hilarious, but actually takes ...

My only real complaint with modern RF lenses is that they use fly-by-wire manual focus ... and light package and is certainly more convenient than using the Canon EF-EOS R mount adapter, so it's a bit ...