T-Max 100 is Faster than Tri-X 320 for Long Exposures - Darkroom Discussions
It may sound a little odd that a 100-speed film is faster than a 400/320-speed film, but that is in fact, true when it comes to Tri-X 400/320 and T-Max 100. T-Max 100 is a common and awesome choice for landscape photographer's and the better reciprocity failure for T-Max is an added benefit. I have created very large 50" enlargements from both Tri-X 320 and T-Max 100 4x5 sheet film, and both look great.
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They are different, but when connected to your creative vision, both can be very compelling choices. I recently created a 40" x 50" silver gelatin enlargement from one of my Tri-X negatives of some Tulips which I share in the video. The texture and grain that is inherent in Tri-X really made this print for me. It gave it a third dimension and texture that I don't think I could have achieved with any other film. I have similar experiences with T-Max 100 for landscapes where I have bright highlights and delicate shadow details that is central to the print.
In regards to reciprocity failure, T-Max 100 is much faster than Tri-X starting at about 8 seconds and it becomes drastic at 30 seconds and longer.
Here are my reciprocity charts that I use for Tri-X and T-Max:
T-Max 100 Reciprocity: 1->1 2->2 4->4.5 8->10 15->21 30->49 60->1:47 80->2:30 100->3:29 120->4:39 160->6:42 200->9:30 240->12:50
Tri-X Reciprocity: 1->1.5 2->3 4->6 8->12 15->29 20->42 25->58 30->1:18 40->1:44 50->2:19 60->3:00 80->3:56 100->5:11 120->6:42 160->9:36 200->13:32 240->18:16
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Keywords: analog photography, black and white, darkroom, film, fine art, kodak, kodak t-max, kodak tri-x, large format, photography
Hi Tim, thanks for the very valuable information, Kodak is not really forthcoming with reciprocity info on their films (compared to Ilford).
I am currently facing a somewhat related problem. I have yet started with 4x5 (Toyo View 45 C, Fujinon W 5.6/150) shot some Fomapan 200 (not so great), some TMX 100 (@50 in HC-110 dil H. 12 Minutes, Mod54/Paterson) and some HP 5 (compliment of the Mod54 seller). I am at the very beginning. Now I have to choose what film to use, I have limited funds, I cannot say invest in TMX 100, TMY 400, Tri-X 320; HP 5, Delta…, FP 4, test eery film in and just choose to my liking. I have acquired a BZTS tube set (and developed the first 4 sheets with it) and I think I will switch to this method in the future. But still, what film to choose. In 135 and 120 film Tri-X 400 is very much my favorite (in SPUR HCD new – HCD-S & HCD 2, speeds between 100 and 3200 with very low penalty for grain and loss of shadow detail; general photography). Prise is an issue here: Tri-X 320 is like 2.10 €/sheet compared to 1.39€ with most Ilford films. I'd like a general purpose film which would allow for landscape/still life/ portraiture (available light)… any advice? Thanks a bunch (first try posting a comment didn't work somehow, btw) Rolf
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