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Jorge --
Establish the ISO speed point with the standard triangle. Its only purpose is to provide a reference for calculating the EFS values of the rest of the family curves. If all you need are the appropriate G-bars for palladium negs you calculate them by dividing your chosen ES by the SBR. It's probably a good idea to increase the ES a little to compensate for probable flare effects, so, for example, you might use 1.95 instead of 1.8 to begin with. Then, again for example, if you encounter a subject whose range is 8 stops (2.4), the appropriate G-bar is 1.95/2.4=0.81.
You'll need fairly unusual materials' combinations to deal with normal or low-contrast subjects; for example, a 6-stop subject will need G-bar=1.08. Very few popular materials can provide that kind of contrast.
Modify your arbitrary flare compensation as necessary if you find that you're consistently over- or under-developing.
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