bryan (11/03/82)
In response to Jim's questions about Eastman 5247 color negative film here are some observations: 1) Its a color negative film. The hype about slides and negatives is just that, hype. You can get slides from ANY color negative material, just print them. By the by, make sure that the new long-life Eastman print film is used otherwise your slides will rapidly fade. 2) 5247 and its ilk are tungsten films. If you expose them to daylight without a conversion filter (85B I think) you will overexpose the blue layer by about a stop. This produces gross crossover (that when the exposure density curves don't track parallel) and terrible color. For any one that prints color I had to use .30CC cyan(!!!) filtration to print some 5247 exposed to daylight. Never could get really good color saturation and color balance throughout the print. The good news is that if you use 5247 with an 85B the color is quite good and the grain is almost invisible. RMS granuality is 5, according to the Great Yellow Father, thats down there with Kodachrome. 3) All the Eastman motion picture color negative films have a remjet anti- halation backing. Thats a carbon black compound applied to the back of the film to prevent reflection of light from the base. Its conducting and serves to prevent static discharges in a mp camera. I have heard that it will damage the film pressure plate in your camera. I tend to doubt it since Kodachrome also uses remjet. I do know that it rubs off and forces you to CAREFULLY, no pressure please, clean the plate. As far a commercial processors go remjet is about as welcome as a tar baby. That and the requirement for cyan filtration (no modern color film requires cyan filtration) when used in daylight tends to keep you captive to those speciality labs. If you have PROCESSED negatives exposed at the correct color temperature you can get them printed at a standard lab. 5247 has an orangey mask, looks a lot like the old Kodacolor X, so be sure to specify "print like Kodacolor II"; the dyes are much more modern than Kodacolor X. I will be happy to respond further if anyone else is interested. Also if there are other photo hackers out there I would be interested in sharing comments on soups. Net.rec.photo.hackers maybe? -Bryan Lyles University of Rochester allegra!rochester!bryan seismo!rochester!bryan
tw (11/05/82)
#R:rocheste:-16400:hp-pcd:7800005:000:720 hp-pcd!tw Nov 4 14:26:00 1982 Re: net.rec.photo.hackers or whatever - there really isn't enough traffic in this group to justify a subgroup. Would anyone really object to this sortof stuff appearing here? I haven't spent much time in the darkroom in the past year or so, so I don't really have any burning questions...but: Has anyone tried any of the new technology black&white films? Such as Ilford's XP-1 or the Agfapan Vario-XL or whatever they call it... I shot a roll of XP-1 and was pretty satisfied with the quality, but I still have about 20 rolls of HP-5 to burn before it is time to think about switching over. Anyone with extensive XP-1 experience? Tw Cook - HP Personal Computer Div, Corvallis OR - harpo!hp-pcd!tw