I can't figure out why but the processing instructions included with a roll of Kodak High Speed Infrared film give a different time than what is on the data sheet and what is in the Kodak BW Darkroom book. I forget what says which but one says use 8.5 minutes with D76 and the other says 11 minutes. Anybody have advice?

-- Chuck Cypert (ccypert@mindspring.com), October 04, 1999

Answers

Chuck, I use and have very good results with TMax Dev deluted 1:4 @ 68' for 6.5 minutes.. Try this,, if you exposed the film properly the results will be right

-- Tom Barrett (tjbarrett@mindspring.com), October 04, 1999.

Chuck,

Periodically, Kodak will "re-test" certain emulsions for various manufacturing and product characteristics. With a black and white film, this may mean a series of processing tests to reevaluate current processing recommendations. The previous recommendation of 8.5 minutes in D-76 was one that had stood for some time and still may appear on some data sheets or literature. About 3 years ago Kodak tested the processing characteristics of HIE and arrived at the new recommendation of 11 minutes in the same developer at 68 degrees. I myself haven't found that my processing times have shifted that much and I have used D-76 and HIE as a combo for years. It is however a good point to remind us to run exposure and process tests from time to time. I hope this has been helpful to you.

Michael D. D'Avignon

-- Michael D. D'Avignon (LoungeAxe@aol.com), October 05, 1999.

Never mind what's in the books. Depending on what you want to do with the film, you will probably use far less time than what they recommend. I expose HIE at ASA 400, and then (if I remember right) develop it in Xtol, 68F, 6.5min. The original times are for high contrast arial photos, and that's definitely not artistic use. So feel free to experiment, and bracket like crazy.

-- Brian C. Miller (brianm@ioconcepts.com), October 05, 1999.

Hi Chuck, Try HIE at EI320 for 10min.@70 in D-76 .This seems to give me perfect negs with no bracketing. It seems something did change recently with the dev. times, I used to dev.11min. as well.Also It's a good idea to use water as a stop bath to avoid pin holes.

-- Derrick Pierce (dpphototn@home.net), January 23, 2000.