Originally posted by Just1MoreDave Your lens is supposed to minimize that sort of thing. That's why it has APO in its name. But the wider apertures let in more light rays, and more at an angle which is difficult to correct fully.
You could get the same exposure at f5.6 and 1/500 (I think) and end up with a similar brightness. You'd probably end up with some fringing still, but less.
Kinda glad to to hear you say it, I was beginning to wonder if the APO part was actually working. This lens does seem to create fringing more than my two pentax kit zoom lenses and my sigma 105 mm macro. That being said, the kit lenses can't go below f/4 or f/6,3 when zoomed in, so that can explain why they don't do it as much, due to higher f/stop. The 105 mm is a prime, so I reacon that's "it's" reason for not fringing much.
Will have to try lowering the AV value like you suggested.
...and interresting quote btw
Originally posted by Wheatfield That's a combination of somewhat over exposure in that area combined with veiling flare.
The fringing is, I suspect, just a typical byproduct of the former.
This is a poster image for why I don't buy anything other than Pentax glass, and why I stay away from zoom lenses in general.
I can understand why you would go for pentax only lenses, but I reacon the prices are also higher for those. I am considering another prime... some day.
Originally posted by Lowell Goudge The only way to stop blown highlights is to either underexpose to Preserve them or add some front lighting, either with flash or reflector
This must be why all flash taken images I have seen, usually look good, edge wise.