maybe it would help if you knew the official names of the two films when originally released: Kodak 2475 Recording Film and Kodak 2485 High Speed Recording film. a review from circa 1974 says this about the 2485:
"Like 2475, 2485 Recording Film is designed for recording applications, and doesn't produce the image quality pictorial photographers expect. It's primary asset is its ability to be pushed to EI 8000 when used for low contrast scenes. ... To get the 8000 speed, you must use Kodak 857 developer -- Catalog No is 184 9074 -- available only in expensive gallon sizes, and only through Kodak Instrumentation dealers." when pushed to EI 8000, it has film grain visible from arms length. if you want even larger grain, develop in HC-110 replenisher diluted 1:7 at 68 degrees for 10 minutes. both recording films are not meant to be used for ordinary 35mm photography. today's TMax and similar very high speed B&W films are much better for many kinds of work anyway. both recording films have extended red sensitivity, something that would matter to street shooters at night. Herb... ----- Original Message ----- From: "Rob Studdert" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, December 09, 2004 11:22 PM Subject: Re: "Fake" vs "Real" effects > On 9 Dec 2004 at 21:53, Herb Chong wrote: > > > you are remembering wrong. the normal EI of the film is twice that of 2475 > > and much larger in grain. it was the first widely available film that had an > > honest EI of 8000 and could render all steps of the Kodak grayscale test in > > normal contrast lighting with "normal" development. > > Not according to: > > http://www.kodak.com/US/en/business/aim/industrial/techPubs/ti2215/ti2215.shtml# > Speed
