How do you know that Harman and Kodak and Fuji haven't done R & D that shows how they can adjust many of the characteristics (grain, speed, contrast, highlight retention, shadow contrast, midtone contrast, spectral sensitivity, etc.) by adjusting their formulae?
I doubt that the creation of their own films led them to a single formulation only.
Same with T-grain (or flat grain, or whatever term the manufacturer uses) emulsions.But none of that means designer grain. What you describe is surely how all regular emulsions come about.
Foma may make more money from their sale to entities like Freestyle then they do from their own films.
Or they may make less.
Distribution and marketing problems are what killed Polaroid and a myriad of others.
And by the way, this is the description of one of Foma's films from their website:
FOMAPAN 200 Creative
is panchromatically sensitized, black and white negative film of the speed ISO 200/24°. It is the film of new generation, making full se of outstanding properties of hexagonal core/shell tabular silver halide grains. The film features exellen resolving power and low granularity and is intended for use under normal or slightly unfavourable light conditions. Its wide exposure latitude allows exposures in the speed range from ISO 100/21° to 800/30° without change of development time. The film is available in roll film 120, sheet films, perforated 35 mm films including long length rolls.
[QUOTE="Agulliver, post: 2165486, member:
As for the Ultrafine T-grain film.....just because they say they've offered such a product since 1989 does not mean that they've offered the same product. The name could be applied to film supplied by any of the film manufacturers. Clearly in 1989 it had to be Kodak as nobody else was making T-grain B&W film. Since 1996 it could conceivably have been Ilford/Harman. Today it could be either of those or possibly Foma. The fact is, nobody knows.
The rolls I have shot are not thin. I am coming to the conclusion is that it's Foma Creative 200, as a sort of T gained film it can be shot at 400 without loss of shadow detail, not a true push. Ultafine list development of T400 in Tmax developer at 8mint, while the massive development chart list Foma Creative at 400 at 7.5. Or it is very old Foma T800 that Ulafine has re-branded to improve shadow detail. Tmax and Delta 3200 are best at ISO 1200 to 1600, shot at 3200 are really a push. As Foma T800 was only on the market for short time and that what 15 or so years ago I swing back to Creative 200.
Matt - that is a nice describtion - but it is from Foma? So is it Tgrain? Or is it not?Foma may make more money from their sale to entities like Freestyle then they do from their own films.
Or they may make less.
Distribution and marketing problems are what killed Polaroid and a myriad of others.
And by the way, this is the description of one of Foma's films from their website:
FOMAPAN 200 Creative
is panchromatically sensitized, black and white negative film of the speed ISO 200/24°. It is the film of new generation, making full se of outstanding properties of hexagonal core/shell tabular silver halide grains. The film features exellen resolving power and low granularity and is intended for use under normal or slightly unfavourable light conditions. Its wide exposure latitude allows exposures in the speed range from ISO 100/21° to 800/30° without change of development time. The film is available in roll film 120, sheet films, perforated 35 mm films including long length rolls.
I will not state it is a bad film - but it is no Tgrain! What is it? A film with "flat cristals" aha - and what dies this mean? Why is "flat cristal" NOT the same as Tgrain?I shoot Foma 200 in 120 and 4X5 and in the past 35mm. I have pushed it to 400 and 800, it will holds it's shadows at 400 if development is extended, at the time I was using MCM 100 and Rodinal. Years ago I did try Ultrafine T400 and developed in DDX with good results, saying that I totally agree that if Foma and 200 and Ultrafine are the same film it is no match for Tmax 100 and 400. In terms of price, I would go with Freestyle housed branded Foma 200, shoot at 200 and consider 400 a 1/2 push. One advantage of Freestyle's house brand it is available in 35mm, 120 and 4X5, the 4X5 is much less than Tmax or Delta 400, Tmax 400 in 10 sheet pack is 2.99 a sheet, Arista 200 comes out to 1.30 a sheet. I shoot 6X9 and 4X5 so any issues with grain or for matter resolution don't matter as much.
This is one stop over and two stops under so that's a range of three stops without any change in development time. This seems a very wide range for no change in development time. It may be that the same development time can cover three stops "after a fashion" but I'd have thought that some change in time might improve the outcome.FOMAPAN 200 Creative
Its wide exposure latitude allows exposures in the speed range from ISO 100/21° to 800/30° without change of development time. .
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