because Im pretty sure one is rated 320 instead of 400. JCO -----Original Message----- From: Don Sanderson [mailto:[EMAIL PROTECTED] Sent: Friday, June 24, 2005 7:35 PM To: PDML Subject: OT: Tri-X question for you B&W shooters.
I see Tri-X packaged as "Tri-X Pan" and "Tri-X Professional". I assumed there was no real difference as I've also seen it advertised as Pro when the package said Pan and the other way around. Talking strictly about the ISO 400 flavor here. Kodak only lists the Pro on their web site as near as I can tell. Here's the rub: The Pan version data sheet says 8 minutes at 68 degrees F in D-76 while the Pro version calls for 6 3/4 minutes at 68, also in D-76. Both at 1:1. Here's a link to the D-76 data sheet that shows 4 flavors of Tri-X at 3 different development times at 68 degrees: http://tinyurl.com/89frp Does anyone have the answer to this riddle? Why the rather large difference in soup times? TIA Don