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dp0 Quattro Green Flare Issue
A troublesome behavior of all the Sigma Quattro cameras is the inability to shoot into direct sunlight: the images develop a green cast due to some kind of internal reflection problem, seemingly from the sensor itself, not the lens, since it applies to all the models and to the DP Merrill line as well.
See also dp2 Quattro Green Flare.
Flare example (from JPEG)
The green flare tends to kill the ability to make use of sunstars.
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SIGMA dp0 Quattro + 14mm f/4 @ 21mm equiv (14mm)
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