dcn> A detail is shown of the upper left corner of tree at the
dcn> bottom, which shows some CA/purple fringing. I chose this photo
dcn> for an example because it has high contrast in the corners, on
dcn> the other photos the effect is not strong enough to be noticed.
It doesn't look so bad. This wouldn't probably be CA, because it lacks
the complementary colour on the other edge of the highlight. It seems
the purple fringing has more to do with blooming of the sensor and
flare from strong sharp highlights. At least that's my simple,
untechnical understanding of the matter.
The image of the playground, it shows that the lens is quite well
resistant to flare. The glowing overcast sky would be a problem for
many lenses. At least from experience, the Sigma 14mm 2.8 would have
some problems here.
Good light!
fra
