EXCERPT page containing first few paragraphs. 2019-03-25 05:54:09
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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.
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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These systems are hugely expensive, so make the right choice for your own needs (full frame vs medium format).
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