RE: enlarged negs - questions on process

Hello Ian,

There are several possibilities as you saw. I totally agree with your point of view. That's why I started to test halftone direct duplicating films (it still exists but for other purposes and markets).
I found and recommend the AGFA PD3p direct duplicating film (sold for aerial photography duplication) and the medical duplicating film from FUJI, blue base. This one as an amazingly linear response !!! The contrast is tunable and the films are orthochromatic.
You duplicate your negs as easy as you would print a B/W paper (plus burning and dodging options).

I still have to experiment further but these films are really promising. I now have sensitometric curves available. I tought I could start to have it manufactured in large format and sell it, but DHL or FedEx charge too much to send it overseas.
The size of the AGFA film is limited to 10"x10" unless you order a custom production.

Let us know your findings,

Philippe

-----Original Message-----
From: Ian Greant [mailto:ian@51north.com]
Sent: Thursday, March 11, 2004 22:19
To: alt-photo-process-l@skyway.usask.ca
Subject: enlarged negs - questions on process

Hello all,

Any thoughts or comments on the relative advantages, benefits, difficulties
between using a interpositive to enlargement method compared to a direct
reversal enlargement?

I've been reading articles on both methods (good ones at unblinkingeye.com)
and it seems to me the direct reversal method eliminates a step of loss,
dust gathering, etc. But the theoretical observations of someone who
hasn't tried a process are often wrong. ;)

Feedback much appreciated as I'd like to start ordering film and stuff in
the next few days.

Cheers!
Ian Greant
Received on Fri Mar 12 04:29:10 2004