shot wide open with the insanely sharp Canon 135mm f2 in AF-C mode using the Sigma MC 11 adapter (firmware 1.0). I haven’t installed 1.01 which might disable AF-C on Canon lenses. So far I love this combo. As a big fan of fast 135mm lenses, using the Zeiss 135mm 1.8 via LA EA4 adapter was a bit frustrating, the phase detect window on the Sony covers a larger area which makes it much easier to work with, especially when shooting vertical, it focuses very fast, just slightly slower then on a native Canon body and is dead on every time.
There are times when AF doesn’t respond, usually when switching from close ups to distant objects. The best workaround is to simply turn the focus ring to the approximate distance of your subject and let af do the rest. I will be using this combo until we see a native lens….
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It is the camera, you get the fastest focus speed on the a7r2 and a6300
Hi François, retested to be certain and the aperture works as it should!
Just in case anybody is interested by the difference between a cheap adapteur (I’m using a Commlite), and the new Sigma :
I read somewhere that the Sigma didn’t allow to change the aperture on the 135mm, but maybe it’s with an older firmware version. Were you able to change the aperture Mike ? I’m really considering buying the adapter to be able to use my 135mm again with AF. I’m just like you, a native lens would be better. I saw yoru comments about the Sony – Zeiss lens, and that’s exactly what I was expecting. A bit expensive for a switch, especially if this Sigma adapter can work quite fine. I have a wedding to shoot in three weeks, so I will decide quite quickly. If you can confirm for the aperture, that would be great !
I have another adapter, not the Metabones, and focus speed on the A7II wasn’t very fast. I didn’t even bother to test in continuous mode. So I’m curious to test on my A7RII. Is the sigma adapter supposed to be better for autofocus speed? I would be happy to be able to keep using my Canon F2 with a reliable and fast AF.