Kodak manufactures 320TXP and 400TX, they are different films and have different characteristic curves. 320TXP is available in 35mm, roll and sheet formats; while 400TX is not available in sheet format. There is no guarantee that the sheet and roll formats of any film are the same emulsion. Since Kodak publishes different times for the roll and sheet formats of 320TXP in D-76 I would surmise that they are *not* the same emulsion. Jerry -----Original Message----- From: pure-silver-bounce@xxxxxxxxxxxxx [mailto:pure-silver-bounce@xxxxxxxxxxxxx]On Behalf Of David Starr Sent: Saturday, September 11, 2004 4:32 PM To: pure-silver@xxxxxxxxxxxxx Subject: [pure-silver] Can I interrupt for a minute? If I can sneak in between the flames for a moment..... I am now the proud owner of my first 4x5 camera (Cambo SCX) and have a real newbie question or 2. Is there any real difference between =46idelity, Lisco, and Riteway film holders? We're going to Chicago next week and I plan on a stop at Calumet to pick up some (a LOT of) large format goodies (the car has a VERY LARGE trunk!), including film holders. Hence the question. =20 Second, what differences are there between Tri-X sheet film and the roll films. I know there's a speed difference, but that's all. Thanks - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Professional Shop Rat: 14,451 days in a GM plant. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ================================================================================ ============================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.