xtol times for sheet filmgreenspun.com : LUSENET : Large format photography : One Thread
Wondering if anyone can share their "starting times" for xtol development of sheet films (esp. tri-x and delta 100). I checked kodak's site and found detailed tables for roll films, but none for sheet films, and understand (correctly?) that the emulsion is not identical between the two types. Any help would be appreciated. Sharon
-- sharon gervasoni (email@example.com), March 21, 2000
Sharon: Go to Kodak's web site and look under "Professional Chemicals". There is a listing for XTOL. The time-temp for Tri-X is listed there. Doug.
-- Doug Paramore (firstname.lastname@example.org), March 21, 2000.
Ilford emulsions are the same in all sizes, so no changes are needed. I use 9'30"/70F for Delta 100 in Xtol 1:1, EI 100.
Kodak Tri-X is different; for 35mm there's TX, for 120 rollfilm there's TX and Tri-X Professional, an entirely different emulsion, and in sheet film there's only TXP. No idea on times for those, but they're certainly on Kodak's Xtol table.
When Kodak says "rollfilm" they mean 120/220 or 70mm, not 35mm, so a recommendation for TXP rollfilm would also be appropriate for sheetfilm.
-- John Hicks (email@example.com), March 21, 2000.
Delta 100 is my favorite film in 4x5 & 8x10 and I have tested/use Xtol extensively. EI 100 = 68 degrees, full strength for 8 minutes in a rotary processor works nicely. Sorry, but I can't comment on Tri-X. I don't know if it's the Xtol or the Delta 100, but this combo is sensitive to agitation.
-- Pete Caluori (firstname.lastname@example.org), March 21, 2000.
I've been trying to figure this out myself. With agitation once every thirty seconds, at 68 degrees, for Tri-X sheet, with Xtol diluted 1:3, I'm thinking around 7 minutes. The Kodak times are way too strong for me. I'd be curious to know if this is true for others as well.
-- bryant urstadt (email@example.com), March 22, 2000.
I use XTOL for TRI-X at 68 degrees diluted 1:3 for about 14 minutes. Works great.
-- Mark DeMulder (firstname.lastname@example.org), March 23, 2000.