Normal Fringing on the 17-40?

[canoli]

Thanks Colin - I appreciate your support. I'm trying to decide if I should "settle."


I was surprised to see such an obvious red fringe along the treeline and in the clouds, but as it's only visible at 100% on a computer monitor, I think maybe I've fallen into the pixel-peeping trap of being overly critical...


...especially of an image like this, where the detail I'm "expecting" to hold is either in dark shadow, surrounded by sunset colors, very far away...or all three.


So is this normal and expected - to see a 1 or 1-1/2 pixel red fringe in a shot like this, or am I being silly?

[Colin]

I really don't know if it's normal.


It doesn't seem like awful performance or anything. That is an awful lot of contrast to deal with. An error of only a pixel or two might be really fantastic performance.


I wish i could be more helpful.

[canoli]

You have been very helpful. By your (and Benj) answer I've come to the conclusion that I should probably just rely on common sense.


Like you said, that is an "awful lot of contrast to deal with."


I figured a treeline in front of a sunset glow ought to show any CA / fringing if it was there. And it turns out it is.


But in not-so-extreme shots I've been very happy with this lens' performance. Maybe it's time to quit testing and just make pictures!


Thanks again you guys.