Shel wrote:
> A densitometer is fine, but there are other characteristics that
> re quite important as well, which a densitometer cannot
> measure. Edge effects, tonal gradation, accutance and sharpness
> come to mind.
True. But if you are testing a water-bath regimen against a non-water-bath
regimen, the _first_ thing you have to do is develop to the same CI, or else
all you're doing is seeing the effects of different degrees of development.
And to develop to the same CI, you _have_ to use a densitometer--eyeballing
it just won't do.
Once you've insured that what you're looking at is not simply differences in
negative contrast, then you can comment meaningfully on other effects of the
water bath development--or lack of them.
Similar to the old hi-fi salesman's trick--he plays the speaker he wants you
to buy just very subtly louder--and it will always sound better in
comparison to the one he plays more softly. In the same way, if you cannot
match the contrast exactly, all else is moot.
--Mike
-
This message is from the Pentax-Discuss Mail List. To unsubscribe,
go to http://www.pdml.net and follow the directions. Don't forget to
visit the Pentax Users' Gallery at http://pug.komkon.org .
