- Oct 25, 2017
850 seems like a damn good deal. I doubt the AF would be any worse than your 50mm. The 135mm Sigma I have works great, but I don't know how much of that is thanks to it being paired with an A9.I wish I had that luck. I'd say put it towards the 85 1.8, but that's not your focal length. See what Canon lenses work the best on the Sigma first before you get it. Also I can get the Sigma from Greentoe for 850. I'll sit on that for a bit. What I read from Fred Miranda seriously put me off of the Zeiss lens.