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Sorry about that - PE is Ron Mowrey aka Photo Engineer.
The business of making proprietary formulas public is complicated as far as trade secrets go. It's not just the formula but even the compounds themselves that may be proprietary. In that case it might not even help us to know because we wouldn't be able to buy the ingredients anywhere.
A few years back there was a discussion like this regarding Ilford's Cooltone print developer when they discontinued it. People on APUG etc were begging for Ilford to make the formula public and my understanding is Simon Galley even took the proposal to the Ilford/Harman board of directors but in the end they could not disclose the formula because it contained a proprietary chemical.
Interesting stuff.
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I have to agree with Ralph Lamabrecht and Michael R 1974. Change nothing in film development and then print them well.
I make your "mistake" all the time, since I rate my 400 speed film at 200 and place the shadows on Zone IV. Ansel Adams would therefore say that I'm shooting it at 100. Indeed, when I take incident meter readings that's the ISO I use.
All the photographs on this Tumblr blog page were exposed in this manner. The first one contains only 2 zones of contrast, the last one about 12 zones. So in the final analysis not even the tonal range makes that much difference when it comes to exposure.
There are only two ways to make a two stop exposure mistake. You picked the right one.
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welcometo APUG;i'm glad to see that the florida crowd is growing. as to your issue, dev normallyand use the highest contrst filtration you can get out of your darkroom. good luck
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So OP what happened when you went with the consensus. It is always nice to know how successful the advice was
pentaxuser
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i agree, feed back is nice and valuable!
