Samyang 14mm f2.8/t3.1 : edge issues ?

Started Jul 29, 2013 | Discussions thread
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ethern1ty
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Samyang 14mm f2.8/t3.1 : edge issues ?
Jul 29, 2013

I just bought a Samyang 14mm t3.1 (f2.8) nikon mount  that I use on my 5D MK II with an adapter.

Things I noticed :

1. Infinity mark does not match infinity (lens goes "after" infinity). I thought it was the adapter but the issue is exactly the same with the lens mounted on m43 (with adapter too).

2. I noticed softness on the right side. See below (image OOC shot at T3.1) :

Left side is ok :

Right side is soft and full of distortion :

This happened on many pictures :

Note : These shots have been made at t3.1

Have you noticed this issue ? Is it expected for this kind of lens ?

 ethern1ty's gear list:ethern1ty's gear list
Panasonic Lumix DMC-GH3 Canon EOS 70D Sony Alpha 7R Sony a6000
Canon EOS 1100D (EOS Rebel T3 / EOS Kiss X50) Canon EOS 5D Canon EOS 5D Mark II Rokinon 14mm f/2.8 IF ED MC
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