Ed wrote, in part: > > -- 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.
I've heard of ND grad filters that are darkest in the middle and fade out to the edges that counterbalance light falloff. I don't think I'm ever going go buy one, though. -Lon - 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 .
