How to test your lenses to find their diffraction limit and a new feature in Photographer’s Friend to adjust the diffraction warning guides.
How to Find the Diffraction Limit of Your Lenses (Podcast 735)
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diffraction limit
Circle of Confusion, the Airy Disk and Diffraction (Podcast 594)
Today I'm going to explain what causes diffraction as we stop down the aperture in our lenses past a certain point, and how this may affect our photographs. I've been working on an update to our iOS app Photographer's Friend so that you'll be able to do two new...