"My old Canon DSLR and even older zoom lens are still awesome for fall photos!"
Peter Travers on how he captured colorful trees this Fall with an 8-year-old Canon EOS DSLR and 14-year-old EF zoom lens ...
Hackaday2y
Converting A Sigma Lens To Canon, Digital Functionality Included
[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 ...