Photons to Photos has published its Fujifilm X-T4 dynamic range measurement data.
The Fujifilm X-T4 basically performs identical to the X-T3. The Fujifilm X-Pro3 seems to be superior, but as Blill Claff from PTP explained to us:
The X-Pro3 appears to have improved PDR but it is an illusion.
It’s well known that Fuji implements the ISO setting in an unusual way.
In this case they have given ISO 320 to ISO 12800 an addition 1 stop boost.Fuji uses a proprietary Exif tag called “Raw Exposure Bias” to indicate how much they have shifted the raw data from “standard”.
Adjusted in Excel for Raw Exposure Bias we see that the X-Pro3 and X-T3 are essentially identical. (They shift to dual conversion gain at a slightly different point).
You can access the chart here.
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