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EXCERPT page containing first few paragraphs. 2021-12-02 16:12:27

Sigma dp0 Quattro

Color Fringing: X3F Corrected vs Uncorrected vs JPEG

The lens in the Sigma dp0 Quattro is very good, but it does have some weaknesses, including mild color fringing.

A serious limitation of JPEG in the Sigma Quattro (and Merrill) cameras is the lack of any correction for lateral chromatic aberration. Many times the JPEG may be very good, but suffers from color fringing (dp0 and dp1 Quattro in particular). This forces processing in X3F (or seeking out alternative tools to deal with it in the JPEG).

Color fringing example

This example was processed from X3F raw here in order to correct color fringing (lateral chromatic aberration), particularly at the upper left corner of the frame.

See the crops that follow for X3F corrected and uncorrected vs in-camera JPEG.

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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.

Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.

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f7.1 @ 1/30 sec, ISO 100; 2016-10-04 15:49:07
SIGMA dp0 Quattro + 14mm f/4 @ 21mm (14mm)

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