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Diffraction blur with the R5 and four prime lenses

Started 7 months ago | Discussions thread
theninth
OP theninth Regular Member • Posts: 323
Re: Ran "Find Edges" - F1.2 Primes consistent with zoom lenses in terms of F-number and diffraction

Karl_Guttag wrote:
I took your two sets of images for the 50f1.2 and 85f1.2 (putting the corners and centers adjacent to each other) and then ran a "find edges" to help identify the sharpest part of the background texture

Interesting, thanks!

The find edges operation causes textures to be darker where they are sharper. I marked below where it looked to me like the peak sharpness. Note it is very flat from f2 through f5.6 for both lenses.

Yes, may perception of the peak was a bit different but it is a really close call, the results are really quite good even wide-open, great when stopped down only a little bit and remain so for a few stops.

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Fujifilm X100T Canon EOS R5 Canon EF 35mm F1.4L USM Canon EF 135mm F2L USM Canon RF 50mm F1.2L USM +2 more
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