M Mount Lenses On Sony A7
Related Faq
Q
Will this work from my nikon d3100 lens to my sony a7 body?
A
Nope, it’s to adapt to the smaller Nikon 1 (CX) mount of the 1 series camera, not the F mount (your D3100) on crop and full frame Nikon’s. 
Q
The fd to e-mount adapter states it will work with a7, but not a7ii. why not? will this work on a a7iii?
A
Hi, it will work on a7iii, tested. 
Q
I want to use nikkor 105 mm 1:2.5 (which i bought in 1980's, it is f mount lens.) with sony a7 camera. will ai-nex adapter work my with nikkor lens.
A
K&F Concept Nikon to Sony E lens mount adapter you are asking, you said your lens mount is F, and Sony A7 camera mount is E, so this adapter works for your, please trust to purchase. 
Q
will this work with tamron (Nikon mount) lenses?
A
I dont believe so since i bought it for a Canon 80d. I didnt buy it for a Nikon camera. You will likely need a different adapter 
Q
I am buying a sony nex-5, how do i know which lenses would fit with the m42 adapter?
A
Any lens that use the M42 size screw in mount. The only other screw mount is M39 and these won’t fit, they would need a different adaptor. They will invariably be vintage lenses and you will only be able to use them in the aperture priority or manual modes, stopping town the iris when metering. Search on EBay for “M42 lens”, that will give you an idea of what you can find. 
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