this sounds like the collimation effect that lens manufactures talk about. light from conventional lenses not designed for digital hit the film/sensor plane at too acute an angle and can cause this.
Herb.... ----- Original Message ----- From: "Frantisek Vlcek" <[EMAIL PROTECTED]> To: "Fred" <[EMAIL PROTECTED]> Sent: Friday, June 25, 2004 6:36 PM Subject: Re: Pentax F-series lenses?? > I did try it on a DSLR, and found a peculiar thing, which exhibited > itself again with ATX 20-35 f/2.8 - in contrasty areas with blown-out > small highlights, the highlights had sharp blue edges all around, > which was quite nasty. Most pronounced it was in the 235 lens. I am > not sure now if I can find the pictures (it was just a quick test), > but other lenses of similar speed and focal length did not do this.
