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07-20-2015, 01:00 AM   #1
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I want to buy a Sony A7 Which adapter for m42 lenses

Hello people

I want to buy a Sony A7, with a M42 lens (Carl zeiss Pancolar 50mm 1.8, or Carl zeiss Biotar 58mm 2, maybe). What adaptater should I buy?

Thank you

07-20-2015, 11:44 AM   #2
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i got this one, but it appears to be nla, at least from the original seller:

it appears to have adjustable infinity focus capability for the lenses, but the thing about mirrorless cameras is that infinity hard stops on lenses are an obsolete concept... so you don't need that adjustability in an adapter.
07-20-2015, 04:58 PM   #3
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I've used a fotodiox adapter, which works OK, but has a couple of issues. This one has a circular ledge behind the M42 mount that pushes in the "stop-down pin" for the lens diaphragm so that it is always stopped down when mounted. Since all my M42 are Super Taks they have the A-M lever to stop down, which I'd rather use.
Also, the inner diameter of this ledge is a trace small for one of my 50 f1.4 STs, so it won't fit through enough. To focus to infinity. My other 50 1.4s do work though.
It looks like the "Neewer" M42 adapter doesn't have this ledge, so I may get one of those. : Neewer Lens Mount Adapter, M42 42mm Screw Lens to Sony NEX E-Mount Camera, for Sony NEX-7, NEX-5N, NEX-5, NEX-C3, NEX-3 : Camera Lens Adapters : Camera & Photo
07-20-2015, 10:54 PM   #4

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I like to use a Canon EF > NEX adapter instead.
The M42 lenses use a cheap M42>EF adapters.
The advantage is that they lenses all become bayonet mounts.

As for M42 adapters, I have a cheap China ebay one, though for the PK>E adapter, I will recommend the Kipon.
The Kipon was at the infinity mark for most lenses, well built, cheapest of the branded adapters and most importantly had no light leak


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