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EXCERPT page containing first few paragraphs. 2022-08-18 15:46:38

Pentax 645Z

Pentax 645Z: ISO 100 to 204800 (Fruit Arrangement, Natural Light)

This 645Z ISO series was shot in lighting around 4400°K daylight filtered through blinds for diffuse and relatively dim light. See also the tomato series. Shot at f/16 using the 90mm f/2.8 macro.

Images: individual channels are from the ProPhotoRGB color space (conversion from a wide gamut color space like ProPhotoRGB into AdobeRGB or sRGB can increase noise in individual color channels). The Gray series is a color profile conversion to Gray Gamma 2.2.

Fruit arrangement

The 645z was shot with High ISO NR = Low. With most every digital camera such noise reduction settings have no effect on raw. Testing for this was inconclusive with the 645Z and the manual does not indicate.

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