Olympus E-P3 JPEG vs RAW
High-ISO Comparison
Let us now move on to what everybody seems to be interested in: high ISO. The following photo was shot with the kit zoom at ISO 3200:
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Out-of-camera JPEG |
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| Image converted with RawTherapee |
The crops below show that due to different interpretations of the raw image data, the visual appearance of noise is quite different in the two images.
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The out-of-camera JPEG has a mostly monochromatic noise pattern, while the RawTherapee interpretation shows an abundance of fairly finely grained but pervasive chroma and luminance noise. The raw crops seem sharper, but there is very little extra detail in them.
Our second high-ISO sample was also shot at ISO 3200, again with the kit lens.
Out-of-camera JPEG
Image converted with RawTherapee
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Once again, the JPEG has a monochromatic noise pattern, while the raw conversion has more chroma noise. Note that this might change when the dedicated E-P3 camera profiles become available - after all, there is raw data, but there is no such thing as a raw image. Every raw conversion is a visual interpretation of the binary information contained in the raw file, which is why the visual appearance of noise can be quite different in two interpretations.
The bottom line is that for the time being, we see no significant extra detail in the raw files at high ISO settings.
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