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Fujinon XF 100-400mm inconsistent focus

Started 7 months ago | Questions thread
MrKazador31
MrKazador31 Regular Member • Posts: 173
Re: Fujinon XF 100-400mm inconsistent focus

Zwepp wrote:

It's definitely not heat shimmering. If that was the case, none of the pictures would've been sharp. Shimmering also looks a bit different and in this case the temperature was way too low.

Thanks for the replies and suggestions so far. After a couple of more tests in different situations, checking the firmware and taking a moment to reflect on it, I've decided to return the lens. The sharpness actually surpassed my expectations, but that's only when a shot is in focus of course and sadly about 90% of the shots are not (no exaggeration). A 50% ratio would've been acceptable, but this is just agony. I'm not sure whether I want to try another copy or that I'll let it rest for a while.

Tamron just released a telephoto lens (150-500) if you're willing to try that. I'm thinking about making the swap.

 MrKazador31's gear list:MrKazador31's gear list
Fujifilm X-H2S Fujifilm XF 50-140mm F2.8 Fujifilm 16-55mm F2.8R LM WR Fujifilm XF 100-400mm F4.5-5.6 OIS WR Fujifilm XF 80mm F2.8 Macro +3 more
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