Tri-x pushed to ASA 6400

ic-racer said:

I shoot Tri-x at EI 12,800 all the time!!!
What I do is place the darkest areas of the scene in which I want texture on Zone VII..

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Thanks for the laugh!
But your calculation is wrong: You are underexposing Tri-X by 6 stops, which would be EI 25,600. I'm impressed.

Mark Overton

kreeger said:

+1 agree. Try shooting sports - like basketball - in a dimly lit arena and see how Tri-x or HP-5 or Delta 3200 at 6400 looks.

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That's why the heavens gave us electronic flash.

Its

trendland said:

Hi - I remember a simular tread with tri x 400 pusehed to E.I ISO 800.
WAS IT FROM YOU ?
AND WAS IT ME HOW GAVE THE HINT
ISO 6400 ?

With regards

PS : Nice results - but it should be the max. ISO 12800 should not look as great.

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Not me. I didn't post that thread. I think Tri-X has its limit on how far you push it.

1600 is about the best I can get out of it.

For stage shows f2.8 and 1/250 would be great. Rarely is it bright enough.

albada said:

Thanks for the laugh!
But your calculation is wrong: You are underexposing Tri-X by 6 stops, which would be EI 25,600. I'm impressed.

Mark Overton

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I did the same with Rollei R3. Rollei recomanded E.I. 6400.......!
Then I wanted to know how best developers could manage the max. pushing. I expected better results in comparison with Delta/Tmax.3200.
I shot some series with 2 films in 120.
First film E.I ISO 3/6/12/25/50/100/200/400/800/1600
Second film E.I. ISO 200/400/800/1600/3200/6400/12800/25000/50000/100000/200000
RESULTS : DEEP BLACKS,EXPRESSIVE TONALS, (with E.I. ISO 6/12 first film)
Second film :
E.I. ISO :
200.000 - real blanc transparent film (nothing)
100.000 - real blanc transparent film with
microscopic contaminated dust grains onto the film.
50.000 - more of such little dust grains
25.000 - very thin lines on the film and bigger points of dust grains with smal aura. (first times realize - this dusty something could possible be highlights)
12800 - extreme thin negatives with highlights (first time little guess what I might have shot from the motive)
6400 thin negatives with extensive highlights heavy contrast.
3200 little thin negatives with better contrast/tonals
1600 normal/good negatives
800 extreme fine tonal good contrast
400 DEEP BLACKS EXPRESSIVE TONALS.
200 same RESULTS as first film at ISO 6/12........ !

Rollei R3 is a normal ISO 400 film.
The rest (6400) is just clever marketing from Rollei.Obviously more clever than me - I believed first to ISO 6400.
At last I am nevertheless the winner (got 80 - 100 films from Rollei at about $ 1,35 each in 120 and then soon realized that it was the same as years before ISO400 Infrared.Todays pricing is nearly 10 bucks a roll.

with regards

PS : cheapest IR 820 film in 120 ever