Diffraction Limit Discussion Continuation

Started Feb 21, 2014 | Discussions thread
Steen Bay Veteran Member • Posts: 7,400
Re: Diffraction Limit Discussion Continuation

Anders W wrote:

Jonny Boyd wrote:

I said that at low resolutions it's more of a plateau that a peak, so you effectively get the same resolution at smaller apertures.

No you didn't say that. You said the peak would occur at different apertures depending on sensor resolution (just as Cambridge in Colour). Do you want me to look up the specific posts for you?

Don't think Cambridge in Colour says that. As I read it he's talking about the point at which diffraction will start to become clearly visible at 100% view (with a good lens).

"Most will find that the f-stop given in the "diffraction limits extinction resolution" field tends to correlate well with the f-stop values where one first starts to see fine detail being softened. All other pages of this website therefore use this as the criterion for determining the diffraction-limited aperture."


The calculator says f/7.3 for a 16mp mFT camera and f/4.9 for a 36mp mFT camera. Sounds guite reasonable to me, as a (rather gross) rule of thumb.

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