64mulford Posted December 3, 2016 Share Posted December 3, 2016 I'm having limited success. I have the 24, 35 and 50mm Sigma ART lenses. The 50mm goes the best in regards to auto focus - quite fast. The 24mm is OK but the 35mm is terrible! Won't focus half the time and when it does lock in it's way off. Looking at getting the 85mm ART but worried it wont work even though it is classed as being compatible. What I'm really after is a 70-200 f2.8 (any brand) that will work. Have tried the canon version but didn't lock focus at all. I have heard this lens does work but on other cameras like the a7rii with it's superior auto focus. Anyone had success with the Sigma 70-200 f2.8 or even the Tamron on the a7sii via the mc-11? I'm starting to think the mc-11 isn't really made for the A7sii at all, unless one of you can convince me otherwise. Quote Link to comment Share on other sites More sharing options...
Xavier Plagaro Mussard Posted December 3, 2016 Share Posted December 3, 2016 Maybe your unit is faulty. If Sigma worked an adaptor for their lenses, it should work at least as other adapters out there?? Quote Link to comment Share on other sites More sharing options...
Inazuma Posted December 3, 2016 Share Posted December 3, 2016 Seems to work fairly well for this guy Quote Link to comment Share on other sites More sharing options...
64mulford Posted December 3, 2016 Author Share Posted December 3, 2016 21 minutes ago, Inazuma said: Seems to work fairly well for this guy Yep, get similar results with the 50mm, but that's it. The other lenses are no where near that quick! Quote Link to comment Share on other sites More sharing options...
BrorSvensson Posted December 3, 2016 Share Posted December 3, 2016 well the a7sii isn't known to be very good at af even with native lenses is it? I think the mc-11 only works good with a7ii, a7rii and 16300 Geoff CB and webrunner5 2 Quote Link to comment Share on other sites More sharing options...
Geoff CB Posted December 3, 2016 Share Posted December 3, 2016 39 minutes ago, BrorSvensson said: well the a7sii isn't known to be very good at af even with native lenses is it? I think the mc-11 only works good with a7ii, a7rii and 16300 This. A7sII is mainly a video camera, native lenses work decently but the good Full Frame AF is pretty much relegated to the A7 II and A7r II Quote Link to comment Share on other sites More sharing options...
JurijTurnsek Posted December 3, 2016 Share Posted December 3, 2016 The magic word you are looking for is PDAF - a7SII only has CDAF Geoff CB and webrunner5 2 Quote Link to comment Share on other sites More sharing options...
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