Sony A7R IV: Diffraction with High Grade Lenses
2019-09-16 • SEND FEEDBACK | 
Related: diffraction, Sony, Sony A7R, Sony A7R II, Sony A7R III, Sony A7R IV, Sony mirrorless
Related: diffraction, Sony, Sony A7R, Sony A7R II, Sony A7R III, Sony A7R IV, Sony mirrorless
This page discusses considerations for diffraction on the Sony A7R IV, which has 3.74 micron photosites—extremely small.
The effects of diffraction will be vary depending on optical performance: a mediocre lens has less to lose, the wavelength of light involved (blue resolves much better than red and is thus affected more quickly). Subject matter interacts with it all, particularly in terms of textural detail on relatively low contrast subject matter. Diffraction mitigating sharpening can help, but never improves tonality and at some point can never 'get it back'.
Diffraction Considerations for Sony A7R IV
Includes discussion of a series from f/2 through f/8.
f4 @ 1/200 sec pixel shift null, ISO 100; 2019-09-14 18:23:18
Sony A7R IV + Voigtlander FE Macro APO-Lanthar 65mm f/2 Aspherical
RAW: LACA corrected, vignetting corrected, USM {5,50,0}
Sony A7R IV + Voigtlander FE Macro APO-Lanthar 65mm f/2 Aspherical
RAW: LACA corrected, vignetting corrected, USM {5,50,0}
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