Fuji XF 10-24 defocus/decentered?

[Diogo Carvalho]

Dear fellow X shooters,

I'm a seasoned semi-pro photographer coming from Canon, I'm just starting in the Fuji X series with a brand new X-T30 and I'm loving it! For my first lens I bought a used (in apparent good condition) XF 10-24 f/4 OIS, since I also loved that focal range on my former APS-C canon system. At first glance everything was working great at close up shots with that lens, unfortunately after close inspection I started noticing some strange asymmetrical right side, defocused shots when shooting landscapes at focal lengths greater than 10mm. I tested for decentering with a lot of focal length and aperture combinations with the natestech test chart, with both handheld with OIS and on a tripod without OIS and can't in all honesty see decentering effects. A physical inspection of the lens also shows no signs of significant dust, no fungus at all, no rattling, no bent bayonet, no scratched elements, noting.

I do get slight less bluring when manual focusing (with peaking aid) the same scene, versus autofocusing (single point, non-continuous AF).

I'm at lost here. What can it be? Should I return the lens? Could the camera somehow be the culprit here? Should I lent a lens to test that hypothesis?

XF10-24_AF_18mm

XF10-24_MF_18mm

Best regards,

DC

[AlexJoda]

They have some sample variations on this lens. I needed to buy 3 of them to get one non decentered sample. If you found this good sample it is one of the best and sharpest lenses in the lineup...

Edited October 26, 2019 by AlexJoda

[HansP]

One expects flawless lenses in this price range! It would probably be acceptable with third party lenses.

My lens shows refocused areas at 10mm, makes it useless to me!