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EXCERPT page containing first few paragraphs. 2022-08-16 00:09:40

Sony A7R
Pentax 645Z

Pentax 645Z: 50 vs 36 Megapixels (25mm / 21mm, Actual Pixels)

This page is an addendum to the matched comparison. Please see that page for all the details.

The goal here is to compare actual pixels from each camera using the same processing settings.

The format equivalent apertures are f/8 for the Sony A7R versus f/11 for the Pentax 645Z. The Pentax 25mm f/4 is better at f/8 centrally (diffraction losses visible at f/11), but better at f/11 in peripheral areas. Hence both apertures are shown for the 645Z.

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Variants 645Z @ f/8, Sony+Zeiss, 645Z @ f/11 available in full article

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