hi all

help! am I doing things right?!

am scanning transparencies via Polaroid Sprintscan 4000 (excellent),
Polacolor Insight scan software (good), Photoshop 5.0, PC, Win2000

would appreciate any advice/recommendations regarding the following (for
example am I doing things the right way?!, do I have Photoshop correctly
set up?):

Photoshop RGB setup: 
RGB = Adobe RGB (1998); Gamma = 2.2; White Point = 6500K; Primaries =
Adobe RGB (1998); Display Using Monitor Profile = box not ticked

Photoshop Profile Setup:
Embed Profiles = all boxes ticked; Assumed Profiles = all None; Profile
Mismatch Handling = all Ask When Opening


scanning with P4000 and Polacolor on standard 'color slide' setting (for
Velvia, Provia) the resultant 8-bit TIFF opens directly into Photoshop
and looks okay - fine

scanning on 'Kodachrome' setting (for.... er, Kodachrome) the resultant
8-bit TIFF on opening in Photoshop comes up with "embedded profile does
not match current RGB setup - specify desired input conversion" - the
choices provided are: 'from: Adobe Monitor Profile 2002/04/18'
(presumably last time I ran Adobe Gamma) - 'To: RGB Color' - 'Engine:
Built-in' - 'Intent: Perceptual (Images) - 'Black Point Compensation'
box is ticked

questions: do I have Photoshop correctly set up? Should I convert or not
convert? On trying both (with same image file) there is a distinct
colour difference (and the unconverted one looks to have 'better'
colours, the converted one looks slightly 'colder')

the P4000 can provide scanning RAW at 12-bit and in Photoshop is treated
as 16-bit - some recommend working with 16-bit files as they contain the
maximum amount of information that can be got out of the transparency
with the particular scanner but two problems at the moment:

1 - the scanner embeds film type info (eg 'Kodachrome') with the RAW
file - when taken into Photoshop, choice is to 'Convert' from 'Polaroid
CS4000 16-bit:Kodachrome' to 'RGB Color' or 'Don't Convert' - latter
results in dark 'underexposed' image (found out this is an embedded
gamma thing), choosing 'convert' results in the 'colder' looking image
as with 8-bit above (actually, haven't tried raw from Velvia yet)

2 - Photoshop 5.0 has limited capability to handle 16-bit images - no
layers or filters

questions: which is the better conversion option with 8-bit Kodachrome
files? and is the gain with raw scans and 16-bit editing worth the
upgrade to Photoshop 6 (or 7)?

help and advice appreciated

regards

Geoff

-- 
                   Geoff Dore Photography
                 Nature - Landscape - Travel

 Mailto:  [EMAIL PROTECTED]           Tel/Fax: 07041 514133
Website:  http://www.geoffdore.com                    or: 01202 315326

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