smirholo wrote:Dinesh, what size grain it is necessary to do? What thickness emulsion? The Base PET or TAC?
And me in a complicated way to feel her on turn blue line since I have not a blue lazer , only 633 and 532 nm.
Grain size and thickness close to VRP. I have the most experience with this emulsion. Base, I think, should be PET as TAC seems to be very birefringent, from John Soneley's posts. If I could get a sample, I'll try blue as well as red and green.
Ed Wesly wrote:Unfortunately I do not have a blue laser, so I haven’t tried any of the “red” materials at that end of the spectrum.
I have. I shot PFG-01 and BB640 at 457 as laser transmissions, ie H1's. They both came out fine. I talked with Mike Midori about the BB640 and he told me that others had reported using it in the blue, but they found that it was slower. I found no such problems. I have not tried shooting reflections on red sensitive film with 457. Thinking further, Mike may have been talking about reflections while I was talking about Tx, which might explain the discrepancy.
Ed Wesly wrote:Current experience with Color Holographics BB-640 or CHL-640 plates and Harman Technology Red show that they are just as capable of recording 532 as 633, at the expense of speed, usually the energy dose is about 4 times as much for green as it is for red.
Not tried shooting in green on a red sensitive plate. I have a few 640's, so I'll give it a try and report on results.