"Ralph W. Lambrecht"
However, I'm a bit confused. On page 1 you state that all emulsions have the same contrast, but the curves on page 5 show three emulsions with three different gradients. The bottom-right graph illustrates this clearly.
Ah, yes. A bit of a difugalty, I'm afraid. 'Intrinsic contrast' might be a better term - and muddy the water enough so people won't ask embarrassing questions (properly that should be 'intensive contrast' but that would be both muddy and turbulent). The emulsions have the same range of input that translates to range of output. They have different DMax because they are added to thepaper in different amounts. Which does give then different slopes in their contribution to the final HD curve.
But if all three emulsions are applied in equal proportion they would all have the same slope. It's the same emulsion with the same quantity-independent contrast. The two-emulsion demonstration shows two emulsions with the same D-Max and the same intrinsic and extrinsic (extensive) contrast. Nicholas O. Lindan Cleveland Engineering Design, LLC Cleveland, Ohio 44121 ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.
