The lens in question was a Sigma 15-30mm f/3.5-4.5 EX DG, built to work with a Sigma camera using the SA mount. As it turns out, the SA mount is actually based on the Canon EF mount, using the ...

[Bastiaan] decided to address this shortcoming by building a Canon EF Lens Mount. The resulting build looks hilarious, but actually takes some interesting photos. [Bastiaan] designed the mount ...

Canon has been making cameras for professionals and hobbyists for a very long time, and the EF lens mount that it introduced ... s newer cameras thanks to an adapter. There are so many EF lenses ...