Comparing Sony A7R IV to Sony A7R III Resolution on a Siemens Chart

2019-10-01 • SEND FEEDBACK |
Related: Siemens chart, Sony, Sony A7R, Sony A7R II, Sony A7R III, Sony mirrorless

This page sets looks at an idealized target (Siemens chart), which can demonstrate the best possible sharpness unambiguously. It presents findings which are definitive as to the peak potential of both cameras under ideal conditions.

There is a much to be learned here, and from f/2 to f/11 for both cameras:

• Detail capture.
• Differences in sharpness and micro contrast when processed normally vs with Enhance Details vs 4-shot pixel shift.
• Effects of diffraction from f/2 through f/11 for both cameras.
• Moiré and aliasing behavior.

Shootout of Sony A7R IV vs Sony A7R III: Siemens Chart

Includes images from f/2 through f/11 at up to full camera resolution, shot in pixel shift, single frame with Enhance Details and without.

f4 @ 0.3 sec pixel shift null, ISO 100; 2019-09-21 09:03:02
Sony A7R IV + Voigtlander FE Macro APO-Lanthar 65mm f/2 Aspherical @ 97mm equiv (65mm) RAW: LACA corrected, vignetting corrected

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