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Forum: Pentax SLR Lens Discussion 01-23-2017, 06:28 AM  
Fa35/2 ca?
Posted By Na Horuk
Replies: 21
Views: 1,524
I think the second photo looks too blue-green. To me the top photo looks more like what I would expect around twilight, just after sunset
AutoWB or CTE WB can cause things like that. The camera color profile is another possible culprit.
Either way, if you want to test for color cast, I recommend you photograph some stationary grey objects in natural daylight, with no windows or filters between.

To me, even the OP photo does not look too bad. Did you shoot raw and PP the photo, or is that in-cam jpeg?
My pointers are:
a) try lower ISO, or better NR
b) add more sharpening. Some cameras add sharpening automatically, even to "raw" files
c) Play with the WB. Remember that if you shoot golden hour or blue hour, it doesn't make sense to combat the natural light. Instead of trying to neutralize the sunset (or sunrise, or total shadow), you should use it as part of the shot
d) I think part of the problem is the DoF. 35mm at f5 on APSC camera has relatively shallow DoF. For me, it is too shallow for landscapes. I take 35mm landscapes at f7.1 or f8.

Thing is, each new lens has some learning curve. You may not realize it, but its true. Handle that lens some more and you will get better results from it.

For real sharpness and CA tests, take photos of closeup subjects in bright natural sunlight. This will show you if there is decentering or other such problems. The lens turbo should make photos look better, because it compresses them to a smaller image circle, which makes CA disappear and details show up more. At least, that is what I heard about that tool, I don't have experience with it
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