If you are looking for a 50mm lens for your Canon EF-M system, this is the lens for you. It's very sharp even wide open at f/1.4 and the autofocus is as fast and accurate as any other lens. On the Canon EOS M6 Mk II, it's just amazing. I was initially a bit reluctant to buy a Sigma lens (3rd party) for the M system and worried about possible compatibility issues, but my fears turned out to be really unfounded. The performance of this lens is phenomenal, even indoors in low light, the autofocus is fast and accurate. Did I mention how sharp it is wide open? :-) I sold my (adapted) Canon EF 50mm STM right after buying this lens. There was no comparison. I even have a Sigma EF-M 16mm ultra wide angle lens. Happy shooting everyone!J&H
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