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Had the chance to try it on a 5D IV, sharpness looked even across the field. I could only inspect on the camera screen but it looked good.

New lens tested. And sadly the same problem persists. Either the first lens was sent to me again or both copies have exactly the same problem. Alternatively both lenses were fine and there is ...

They can a bayer simulation mode with pixel shift hehe.

Here is an update. The lens was sent back for repair shortly after the making of this thread, I wasn't allowed to just swap it out. It was dragging out on time so I emailed the store asking about ...

My a7 is full of dust, many of my lenses have no caps.

If I remember correctly it's a rebranded Japanese lens. They don't need to be converted for mirrorless cameras, just get an adapter. It is the 50mm f/1.8 Color Ultron/ Rollei Planar that was made ...

If you can upload photos looking through the lenses with a bright background we internet experts here can make a final judgement. The Nikon lenses are from different generations. Looks normal.

Unheard of. First of all, as already said you are checking the lenses the wrong way, the reflected color is mostly the coatings. Look thru a lens to spot the yellow or brown tint. The coating ...

They are all handheld shots. But yes a tripod should be used. I tested the adapter with my EF 100mm 2.8 USM Macro lens, also handheld and saw nothing wrong. However I would like to have tested it ...

I have taken some more photos and concluded that it is the field curvature that is stronger on the right side. At f/11 there is no perceivable difference across the field. To be clear I'm not ...

I have personally only used the Canon 10-22mm and Samyang 14mm. The Sigma is in a different class image quality wise. And from what I've seen from other peoples photos I think that the Sigma ...

Thank you. There is the risk I get one that is worse. That would be no fun. As you say, my copy is more or less evenly sharp at 18-24mm. But 14 is the most important FL.

Did you see the difference between left and right side? I'm not new to UWA lenses. Had the Canon 10-22mm for many years and it was my favorite lens until I upgraded to fullframe. The new Sigma is ...

In probably any other case I would agree fully. However, since this lens actually can make sharp edges at 14mm f/2.8, an amazing feat. I'd like both sides to be equal. Not a good side and a bad side.

Hi. I just got the lens and the first thing I noticed was a potential issue with the edge sharpness at 14mm, right side. This is the Canon version used with a MC-11 adapter on my Sony A7. On one ...