I am shooting with a Fujifilm X-H2 with an XF 16-80 1:4 lens. I have noticed that the left and right edges of a landscape frame are not in sharp focus while the center is. Anyone else have this problem? It seems to happen in all focus modes but not with other lenses.

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Hi, I only can speak of the Kippon 645 with focal reducer. It states in their website that it corrects some of the issues with adapted 645 lenses. I do not know if this is true or not but I can say that I am happy with the results and that I would recomend it. I attached some samples with me pushing the lenses to wide open which in theory should make for the worst performance problems with focus are human error  probably https://imgur.com/a/d1SXoyf    

I had the X-T10 - “two step”. I have the X-T2 - “two step” and X-T5 - “three step”. I was annoyed at first but now I don’t even think about it. I got used to it. 

HI, I recently got an X-T30II after having and having had many Fuji cameras. It's the first time the shutter button behaves this way, so I'm wondering if it's normal or malfunctioning. Instead of having "two steps" focus and shot it has an empty travel before it activates the focus. Let me explain, pressing the button with light force makes it travel 1mm or so and then it stops (still no focus engaged), adding a tiny bit of force moves it to the next step and it focuses, again a bit more force for the shot. All my other cameras just have focus at fist amount of press and then shot, no empty travel at the beginning. Hope I've been clear. Any other experiences on this? Is this "normal" in this camera? I had to get used to it and find it very annoying anyway Many thanks

Please checkout the videos on this link.  This is testing the NiSi UV with lens hood and UV from that kit at and below minimum focus. You can see there is no lens errors.  https://drive.google.com/drive/folders/1skQp3TKzLyFbQgaPyvIqK9gYQLSL09s2?usp=share_link