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 ...
Amateur Photographer on MSN4mon
Best EF-mount zoom lenses for Canon DSLRs
The best EF-mount zoom lenses mean that you and your Canon DSLR are prepared for any eventuality. Allowing you to cover a ...
When you hear the term “extension tube”, you probably think of something fairly long, right? But when [Loudifier] needed an extension tube to do extreme close-ups with a wide-angle lens on a ...