TXP or 320 TXP ?

[durr3]

I have been shooting with Ilford HP5+ for sometime now and want to try some TriX.
Do I go to TXP or 320 TXP ?

thanks

[Renato Tonelli]

For large format only 320TXP is available.

[durr3]

Well That works. Thanks

[Pete Watkins]

Tri-x 320 4x5 is the best, shame I can't afford it all the time.
5x7 & 8x10 are just a dream.
Pete

[Donald Qualls]

FWIW, 320TXP is also the only film I've found that can be pushed to an honest EI 5000 with Super Soup -- and maintains reasonable contrast, reasonable shadow content, and reasonable grain in the process. TXP (the ISO 400 kind sold in 35 mm) won't quite get there and is grainier; Foma 400 doesn't come all that close (I think I figured it at EI 2500), and forget it with TMY (haven't tried TMZ). Probably only matters if you're doing hand-held night photography with a Speed or similar...

[richardman]

Donald, what kind of "Super Soup" are you talking about?

[jbenedict]

Tri-x 320 4x5 is the best, shame I can't afford it all the time.
5x7 & 8x10 are just a dream.
Pete

Both available but at a price. 5x7 is easy to find, 8x10 320TXP is one of the films Keith Canham does the group deal on. He may have some 320TXP in 8x10 right now. He's also looking for people to commit to TMY in 8x10.

[Donald Qualls]

"Super Soup" is my own concoction, invented to try to save some of my early large format (9x12 cm) films that, on unloading from the film sheaths, I found had been loaded backward, hence exposed through the base and antihalation layer (to the tune of about five stops less than expected). I looked around at what I had in the house and mixed up what I thought would be the "hottest" developer possible, then developed to completion -- fifteen minutes at 75 F, with vigorous and frequent agitation (I recall it being every fifteen seconds) (this was in daylight tubes I made to fit the 9x12 film, and also, with slightly longer tubes, for 4x5). The mix is given on my Formulae, Dilutions and Times page (http://silent1.home.netcom.com/Photography/Dilutions%20and%20Times.html). After getting pretty good results (compared to what I should have had, exposing through the base), I did some more controlled tests and concluded that I was getting a pretty usable EI 5000.

Typing from memory earlier, I had forgotten that I estimated the results at EI 6400 with 400TX, but since that isn't available in sheet formats, it's largely irrelevant to my Speed Graphic (though I do have a roll film back for it).

[Jim Andrada]

Adorama looks like they have 8 x 10 TXP 320

[richardman]

Ah yes, I remember your info from an earlier thread. I should try it. Thanks

[BradS]

for the record, TXP is 320 TXP. The 400 speed stuff is 400TX.

[Donald Qualls]

Ah yes, I remember your info from an earlier thread. I should try it. Thanks

If you like hand-held night photography without flash, this is the best solution available (that I know of) since FP-3000B was dumped in both 4x5 and 3x4 sizes. Here's a scan of the very first negative I processed in Super Soup. Rather old TXT (Tri-X Professional ISO 320), 9x12 cm, shot in a Patent Etui with 13.5 cm f/4.5 Radionar, metered for box speed and accidentally exposed through the base.
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