Romanko
Member
This is one of the last films developed in this way
Nice! Was it shot with your Agfa Clack?
This is one of the last films developed in this way
Did you try approaching the seller with this question?I was wondering if anyone had access to data sheet(s) for the Foto 400 and/or FN64
I would actually be interested in seeing that, if only out of curiosityThere is someone I know currently working on H&D curves for FN-64 35mm and sheet films in several developers, not sure if this would help you though.
I'll have to check out those videos, thanks for sharing. I did hit up the seller not too long ago, but am waiting on a reply. I'll report back w any relevant infoDid you try approaching the seller with this question?
This stuff is allegedly new(ish) stock sold under the "Svema" brand name, but it sort of remains unclear, at least to me, what it is exactly. It's possible that these are indeed fresh emulsions manufactured in according to the old Svema spec (in which case some of those old leaflets might be useful!), but I have doubts that's the case. My guess - and this is total conjecture - would be that these are repackaged industrial/aero/technical films coated by FilmoTec/InovisCoat.Before 1989, there was no free market in Bulgaria. The available photo films were mainly provided by Svema and ORWO. German ORWOs were loved (NP15, NP20/22, NP27), but it was difficult to buy - shortage. On the other hand, (ФОТО) FN64/65, FN125 and FN250 were always available but last choice. They had problems with the emulsion, the grain, they were sold almost always without cartridges. What's specific about these movies is that they have a LOT of silver in them. Maybe I have some of the old leaflets somewhere, I have to check, but there is no guarantee that what is now being sold is the old emulsion.
This stuff is allegedly new(ish) stock sold under the "Svema" brand name, but it sort of remains unclear, at least to me, what it is exactly. It's possible that these are indeed fresh emulsions manufactured in according to the old Svema spec (in which case some of those old leaflets might be useful!), but I have doubts that's the case. My guess - and this is total conjecture - would be that these are repackaged industrial/aero/technical films coated by FilmoTec/InovisCoat.
Only way to know seems to just go to Shoshtka and see by oneself
Can you get a sample of Tasma aerial film? It has weird bluish green emulsion.Attached is a piece of Foto 100 120 film compared to Aviphot 200:
Can you get a sample of Tasma aerial film? It has weird bluish green emulsion.
Keep your Karma clean:
![]()
CatLABS
Large format cameras, lenses, film holders, darkroom equipment, Jobo sales and service. We carry large format cameras and lenses, Jobo machines,...www.catlabs.info
I will NOT be buying from them
The piles of rubble are where the factory buildings were
I ordered a couple 30.5m bulk rolls from these guys a couple weeks ago and received them yesterday - everything went smoothly.
I understand that this film is of somewhat ambiguous provenance, but I was wondering if anyone had access to data sheet(s) for the Foto 400 and/or FN64? I'm really only interested in spectral sensitivity and recommended processing times for developers other than Rodinal (I'm guessing the times that were provided on the package were for a 1 + 50 dilution?), so recommendations from personal experience are welcome as well.
Micrat is a very slow (GOST ~3) high-contrast copy film. I doubt that what you bought is Micrat. I would try shooting your film at EI 100 and 200 and developing in Barry Thornton's 2 bath developer for 4.5 min and 4.5 min. Or (semi-) stand develop in Rodinal.
This is all part of shooting unknown film stock game. Great fun if this is your kind of things.
I did a quick search, and a couple listings online (including one from a Japanese film seller) list this as ISO 6. The Micrat line seems to be low speed (I've used Micrat-Orto Direct, which is < ISO 1).
I know nothing about this film stock, Romanko's suggestion that they probably mis-rolled something else makes good sense.
My general advice would be what I do with an unknown film that I have a lot of - meter at ISO 100, and bracket two or three stops either way.
If you're getting heavy overexposure you're probably at least a couple stops over.
[edit] This is also orthochromatic, so if you shoot it through an orange / red filter and still get an image, it's probably mis-rolled.
If you shoot ISO 3 film as ISO 25 you will have 3 stops underexposure. Your negatives will be very thin. Your shadows will have no density (transparent) and your highlights will be light-grey. If you post a photo of your negatives we could probably tell you more.if the film is say, 3 ASA, and I shoot it at 25, that should come out grossly underexposed and not overexposed?
Concerning the fun factor, there is none, I can tell you
According to GOST, should be 4.5, but Mikrat 200, for example, can be pushed to ~25-50iso with good results and not too much contrast.I am on the third roll of Svema Micrat-N, but I cannot understand what sort of emulsion is this. Upon me asking, the Astrum fellows told me this film is 25ASA, but results so far indicates this not to be the case.
View attachment 341578
The negatives all come out heavily overexposed, although they were shot at 12, 25 and 32 respectively. Moreover, it would appear that the slower I treat this film, the overexposure occurs more heavily. Could it be that the sensitivity is way higher than say, 25 or 32?
The label on the film can indicates "develop for 5 minutes" and this is all there is, as far as recommendations are concerned.
Any idea on what is the actual speed of this Micrat-N negative, please? Any development data? Thank you !
I just processed a test sheet of 8x10 'Svema 100' in Rodinal, 13 min.1+50, 68°F in a Stearman Press 8x10 setup, using dev. info from the MDC.
Pre-soak came out blue/black.
Definitely NOT Aviphot.
Used developer came out dark purple.
First test sheet came out ok, I might shoot it at EI of 80 for a bit more shadow detail.
Base is quite thin, almost like litho film, maybe slightly thicker?
No code notch, clipped corner.
I exposed another sheet of the same scene with an IR720 filter at EI 1, will try to process that this weekend & report back.
Photrio.com contains affiliate links to products. We may receive a commission for purchases made through these links. To read our full affiliate disclosure statement please click Here. |
PHOTRIO PARTNERS EQUALLY FUNDING OUR COMMUNITY: ![]() |