North for Short
Member
Can it be done?
Eric Rose said:yes. made the mistake of rating my FP4 at 400 asa once. Process as a 2 stop push. Actually turned out very good, although a tad grainier than usual.
modafoto said:when talking 'bout pushing FP4 you should check out this APUG thread:
(there was a url link here which no longer exists)
NikoSperi talks about 6 stops of underexposure and provides af scan of a neg from that film.
Morten
Film speeds are very much set at the time of manufacture although they can be moderately changed by the developer type, processing method and developing time. An extra fine grain developer used undiluted may lose around one stop in emulsion speed yield when compared with a developer of the D-76 type (Perceptol and Microdol-X are developers of this type) and may be around one-third to two-thirds of a stop increase in a speed enhancing developer such as Microphen or T-MAX/T-MAX RS, so your film will still be under exposed even with the last type of developer. If your film has some important images and/or you wish to experiment, try using T-MAX developer and develop to Ilford`s recommended time for EI 400 ISO/ASA. If your film isn`t important and you don`t wish to experiment, then throw it away.North for Short said:Can it be done?
Keith Tapscott. said:Film speeds are very much set at the time of manufacture although they can be moderately changed by the developer type, processing method and developing time. . If your film isn`t important and you don`t wish to experiment, then throw it away.
North for Short said:I am afraid that the film is a very important film and just to let you know, I have processed the films and I have images from the negs. I will have to do a contact sheet and see where I go from there.
Thanks very much for the info. It has been quite informative.
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