Re: digital negative possibilities for gum
On Oct 19, 2006, at 12:36 PM, Ender100@aol.com wrote:
Hi Charles,But that still begs the question, why?
At any rate a bitmap that's given a curve correction doesn't look that dark. I've never tried to print an uncorrected bitmap; when I started out with bitmaps I was working from Dan's book, and the book said a bitmap needs a curve or it will print too dark, and I didn't have any reason to doubt him, so I got one of the curves off his CD and tried that and it worked pretty good, with some slight modification, and so I always used that on all the bitmap negatives I ever printed. As you can see from the other negative posted, I prefer a rather thin negative for gum; much density doesn't do anything for gum, as many people before me have pointed out.
I dug out an old bitmap laser printer negative, one for a print I've got on the website, so you can see what a correctly curved bitmap might look like. (The film it was printed on was translucent white when it was new, but over the years has faded to this ugly yellow- brown color).
I didn't get Charles' post, below, so will answer it here. Like I said, I've never tried to print an uncorrected bitmap, and to answer his question I should probably try to print this with more exposure, but I'm not going to because I can't see any reason to waste any time on bitmaps. (For this demonstration I was following Chris's protocol of using the same time for both negatives). But just looking at it, I'd just say it's just not a good negative for gum, and more exposure isn't going to help it. What I suspect is that if I printed it long enough to retain the details in the face, then the shadows would be way overexposed, and then you end up with the problem that if you develop long enough to open the shadows, you'll lose the highlights. That's what I meant when I said that the negative "prints with too much contrast."
Best Wishes, Mark Nelson Precision Digital Negatives - The System PDNPrint Forum at Yahoo Groups www.MarkINelsonPhoto.com Military Commissions Act of 2006 - A STAIN on our Nation's History In a message dated 10/19/06 1:08:16 PM, firstname.lastname@example.org writes:This is getting interesting. I do not (yet) do gum but it sure looks as if