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Canon M6ii and EF-S 15-85mm IQ Tests (DXO vs Lightroom Enhance Details)

Started Dec 16, 2021 | Photos thread
OP Mike Arledge Senior Member • Posts: 2,465
Re: Canon M6ii and EF-S 15-85mm IQ Tests (DXO vs Lightroom Enhance Details)

nnowak wrote:

Hard to see much in these small files.

I would suggest reshooting your 15mm image, but wide open at f/3.5. Step forward on the path so you have a full line of grass across the bottom of the frame and set the focus point on those two trees. The 15-85mm is notorious for defective copies that exhibit decentering at the wide end. If your copy is good, the lower left and lower right corners of the frame will be equally blurry.

Personally, it took three tries to get a copy that was not decentered.

Yeah, I guess I forgot how poor the DPR image viewer is at times…

I will try another test over the weekend, I had not seen much said about issues with this lens, so thanks for bringing that to light.

 Mike Arledge's gear list:Mike Arledge's gear list
Nikon Z5 Nikon Z fc Sony a7 IV Canon EF 24-70mm F2.8L II USM Sigma 28mm F1.4 DG HSM +5 more
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