Still, for an affordable, portable lens for architecture photography, the Canon EF-S 10-18mm f/4.5-5.6 IS STM is an excellent ...

[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 ...

But when [Loudifier] needed an extension tube to do extreme close-ups with a wide-angle lens on a Canon EF-M camera ... the extension tube also adapts to an EF/EF-S lens, which has a shorter ...