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 ...

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 ...

The best EF-mount zoom lenses mean that you and your Canon DSLR are prepared for any eventuality. Allowing you to cover a ...

The 16mm F1.4 lens is the largest prime lens of the bunch, with the widest perspective, equivalent to 24mm. It measures 90.3mm in length and weighs 14.6oz / 415g, while its perspective is similar to ...