Diffraction limiting

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Ad12 Regular Member • Posts: 471
Diffraction limiting

Hello!

On imaging resources, I noted my new XF 18-55 says diffraction limiting starts at about f16. My old lens for my Canon the sigma 17-50 they say it begins at f8. I must admit, the lens was usually super sharp, but did definitely soften up after about f10 in my experience quite a lot.

I always mistakenly thought diffraction limiting was kind of similar for lenses at a certain sensor size. this suggests not.

So is it the lens that really dictates this? Not interested in pixel by pixel worrying, just curious!

 Ad12's gear list:Ad12's gear list
Canon EOS Rebel T7i Fujifilm X-T30 Sigma 105mm F2.8 EX DG OS HSM Fujifilm XF 18-55mm F2.8-4 R LM OIS Canon EF-S 55-250mm f/4-5.6 IS STM +3 more
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