I've seen that kind of fringing before in out of focus areas under
similar conditions when using my A400/5.6 with a A2XS converter, but
not on anything like this. Even with that kind of pushing the limits
glass, the in-focus areas are okay. Did you shoot RAW and convert? If
you're shooting jpegs, what are your camera default settings? I never
shoot jpegs, but I've heard you have to keep sharpness and saturation
at mid levels or less. We have some real optical experts here, who may
be able to offer more.
On Feb 27, 2005, at 2:07 AM, Marco Alpert wrote:
I'm a brand new convert to Pentax, having just purchased an *ist DS as
my first DSLR and have been trying to acquire a few of the suddenly
oh-so-hard-to-get primes. Thursday evening I got home to find an FA
135mm f/2.8 had arrived from B&H and yesterday morning shot a few
quick pictures of a tree in our front yard before heading off to work
(no artistic intent - just wanted to see if it was basically
functioning). I didn't get a chance to download them until this
evening and was somewhat disturbed to see the amount of color fringing
(or whatever it is) at the high contrast transitions between branches
and the sky. Example here:
http://www.alpert.com/marco/temp/
Any insights as to whether this is typical or not, or if it is
indicative of a problem with the lens (or camera) would be much
appreciated. Frankly, I'm still pretty much a novice at the digital
stuff and I'd love to find I've done something stupid.
Thanks.
-Marco
