On Sat, 28 Jul 2007 14:20:27 -0700, John Meyer
wrote:


Yeah, the purple fringing is a lens thing. A lot of consumer zooms have
that problem. So I was curious about what lens. There are some software
solutions that can reduce the effect. Here's a method for Photoshop:
http://creativebits.org/photography/...urple_fringing


Oddly enough, John, I just saw a comprehensive test of the Sony 75-300
online (Camera Laboratoes was the site, I think), and it showed no
fringing AT ALL at 300 mm, but some at other lengths. Hmmmm......

The rest of what I see comes from over-compressing the JPG. I'm not too
familiar with the Sony A100 and how it saves JPGs, assuming you're not
shooting RAW. The lighting conditions are obviously poor! You can
recover a lot more from a RAW file than from a JPEG which is already
compromised by nature.

The A100 saves JPEG, RAW, or JPEG + RAW (gotta get me one of them 8 GB
cards!).

I would say to avoid processing your JPGs as much
as possible and to compress them less. Especially if you're posting in
yEnc you can get away with bigger files.


Thanks for the tips, John.


What a shame about that accident. Why risk a formation landing? What's
the point?


I'm also wondering if part of the blame is with the lead plane for
touching down before the other, although that wouldn't explain a
head-to-tail collision since P51s can land side by side if need be on
Oshkosh's runways.