> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Weist, Jeff > Sent: Friday, November 09, 2001 10:51 AM > To: '[EMAIL PROTECTED]' > Subject: RE: Enlarging Lenses <snip> > -- by "light falloff" you mean that the light is more intense > at the center than the edges, correct?? What causes that and > how do you correct for it?
As mentioned already by Shel, yes this appears as a "hot spot" in the center and less light at the corners. Of course, in enlarging a negative, it leads to a darker area in the center. I'm not sure what design flaw causes it (but I'm sure some lens guru on this list sure does). In normal printing, where there is usually a wide range of tones and some burning and dodging takes place anyway, it's not usually much of a problem. Where I really see it most in in my contact sheets. Thanks, Ed http://lightandsilver.com - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
