DeBone 75
Allowing Ads
FWIW, I shoot it in 35mm and MF at ISO 200 and develop it in Dead Link Removed I've not verified that it's really ISO 200 in DS-10, but I doubt if it's more than 1/3 stop off. I get very good results like this. For this film, DS-10 should be pretty similar to XTOL, so if you want an off-the-shelf developer, you could try that.
I dont think this film is temperamental as such, only that the box speed confuses people (it relates to speed in a speed increasing dev, such as microphen and even then is optimistic) and it develops bloody fast. I find I get 125 from FX-39 which gives about the same speed as Xtol 1+1. I might try 100 in very contrasty light. My negs look remarkably normal apart from the blue base, although I have not printed any since being away. Mid tones aplenty on the negs.
Grain looks slightly finer than TriX but not much. Delta 400 is finer, but I was looking for olde worlde character! Such a shame. If they sorted the QC and put it on a decent base it would be a real winner.
ISO testing requires a specific developer which not so oddly is very similar to D-76. There are many other criteria such as developing no sooner than X after exposure and no later than Y.
Presuming that Foma is honest, there is no microphen involved. It would have to be rated as an EI in that case.
I'm having difficulty understanding how an ISO 200 film winds up being the same or slower than its 100 speed sibling. And the latter is very easy to live with, no less.
I think for the reason you mention. Roger Hicks mentioned that Foma admit that it is a 200 film only in Microphen! Roger finds he can get about 160 out of it in DDX which would be about right as I find DDX about 1/3 stop or so faster than Xtol, which in turn is about 1/3-1/2 faster than D76. Acc to Roger H, Foma is honest about the use of Microphen in the speed rating. I first used it years ago as Acupan 200 when I rated it at 200 and got horribly underexposed negs. At 100-125 it behaves very predictably and I am fairly confident that people who say it is very temperamental in exposure and development are having underexposure problems in the main. If I was using D76 I would use an EI of about 100, so people using Pyrocat and using EIs of 80 sound about in line with my findings and others. It is odd that they have Foma 100 which is of about the same speed! Quite a different look I believe and with an RMS of 14, so larger? or was it 13....for the 100
ISO testing requires a specific developer which not so oddly is very similar to D-76. There are many other criteria such as developing no sooner than X after exposure and no later than Y.
My understanding is that this used to be true, but isn't true any longer; manufacturers can now use whatever developer they like in specifying their films' ISO speeds. Foma used a speed-increasing developer for their Fomapan 200 film. That said, I don't have any references for this, and I don't recall the source, so take it with a grain of salt.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?