16 bit editing workflows are becoming more common. Color Folio
is now offering 16 bit Tango scans, which means you can extend the
range of your image corrections in full 16 bit space from beyond
the scan itself all the way into Adobe Photoshop, with all it's
Some tools and functions are not available for use on 16 bit files
from within Photshop, even in the latest version 6 which added a
lot of new support for these high bit files. There are a number
of common selection techniques not available, such as Color Range
and using Quick Mask mode to paint mask refinements.
There is a solution available. Simply make a copy of the 16 bit
file and convert it to 8 bits. Make your selection using all your
favorite methods. Now you can use a couple of methods for transferring
the selection over to the 16 bit file.
First you can open an adjustment layer, which will automatically
incorporate your selection into its layer mask, and simply close
it without making any changes. Now when you activate the 16 bit
file and use Load Selection, you should be able to select that layer
and load the selection that is captured in its layer mask. Alternatively,
you can save the selection in the 8 bit file as an alpha channel
and retrieve it as such once again from the Load Selection command
in the 16 bit file.