When Sigma released their three primes for EF-M mount, I thought I'd only get the 56, because I already have the Canon 32, have 16 for daylight covered by the 11-22, and have wider indoor shots covered by the 22. But I gave in to temptation and got the 16 anyway. I'm really glad I did. The fact that it's both significantly wider than the 22, and 1 stop faster, means that it's a lot more useful for low-light indoor shooting. So far, I've used it for a party in ridiculously dim lighting (I mean absurdly dim), and for a lot of backstage and rehearsal shooting for a Christmas show I direct (thankfully now over). The combination of this lens and the M6II's amazing AF makes focusing in near darkness a snap. Here are a few from the party:




YMCA!

And some from backstage and rehearsals:











This is a great lens, just like the 56. Although it's the largest and heaviest EF-M lens I own (a little larger and heavier than the 18-150), it's still remarkably small and light (and cheap) for such a fast and sharp wide angle prime. IS would improve it, but also make it larger, heavier and more expensive. Also, since I use it pretty much exclusively for people pictures, IS wouldn't help me. I need to shoot at 1/80 at least, and preferably 1/100 or 1/125 for people pictures anyway. For outdoor landscapes, I'm going to be shooting stopped down at least to F5.6, so I have the 11-22 for that with IS. If you're on the fence about getting the Sigma 16, and shoot people indoors without flash, get it. It really helps to open up the M system, along with the 56, which is pretty much a perfect portrait lens with the M.
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Alastair
http://anorcross.smugmug.com
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