[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 ...
Canon announces that they have holds onto the number one spot for interchangeable-lens digital cameras, a record it has held for 21 consecutive years. A survey taken by Canon showed that the ...
The patent, JP2025-12993, which was published in Japan on January 24, demonstrates the concept of taking one optical system and adding a secondary optical system that can be inserted and removed as ...
Sigma has launched two fast-aperture prime lenses for Canon mirrorless cameras; the 16mm F1.4 DC DN Contemporary and 23mm F1.4 DC DN Contemporary. They join four other Sigma lenses available for ...
As a result, you'll have to do a bit of research into your lenses and cameras to make sure you're getting the right mount. After all, as evidenced by such pieces as the Canon EF-EOS mount adapter ...