Let me follow up with another comment regarding Ciba gamut. It's interesting how
digital technology borrows terminology from the older graphic processes, like "unsharp
masking". But there is a reason for it. When Ciba was in its heyday, folks would mix
low-contrast developers or "pull" process their E6 for lower contrast transparencies
(most current films don't pull well). But these shortcuts rarely produced good Ciba prints because the added step(s) of making masks served not only to reduce image
contrast but to correct the color-reproduction errors inherent to Ciba. Today most of
you do that sort of thing in Photoshop; but with Ciba it can be beautifully done with
silver mask registration. Quite easy once you've learned the basic tricks, and probably
no more time involved than what it spent at the computer correcting images. But you
do need good punch-and-register masking gear, which is a bit difficult to come by
nowdays, especially for anything large than 4X5. I personally find darkroom work relaxing, so am attracted to this sort of process. Masking involves some fairly ordinary
black-and-white film techniques, as far as chemistry and sink gear are concerned,
though there are some distinct tweaks to making it work well. But no need for an
expensive scanner. Films like TM100 or FP4 can be used for masking. No need for the
discontinued Pan Masking film recommended in older literature. So if there are some of
you who don't want to follow the herd down the digital path, Ciba is a beautiful option.
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