It’s a similar story with the older Canon EF 16-35mm f/2.8L III USM lens for ... The other is that the knurled control ring at the front of the lens, used for quickly changing custom settings such as ...

[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 ...

Sigma has launched two fast-aperture prime lenses for Canon mirrorless cameras ... and moderate flat white drinker who has lived in Kenya and believes we have much to enjoy and learn from each ...