Andrew Dacey wrote:
>I'm making progress with the 9950F in Vuescan. I'm still not 100%
>happy with the results but I'm starting to get better results.
>
>A major trick I've learnt has been to use "lock film base color" (on
>the input tab).
>
Never done that. I use "Lock Exposure"
><snip>
>I'm still having problems with the brightness but I'm finding that at
>least using the above technique I get a scan that's not blocked up at
>all on either end of the histogram, using 48-bit colour I can stretch
>this out and still get continuous tone.
>
>
I've only used VueScan on individual frames lately. Is it possible to
see and set the histogram/ W&B points for a single frame preview?
Setting that for the most contrasty frame and locking exposure should work.
>I'm a little disappointed that the scans are needing a lot of work
>once I bring them into photoshop but I'm happy that at least I'm
>getting files that have tons of headroom for correcting them.
>
>
The real thing that makes for great images right out of the scanner is
film profiles. Vuescan doesn't do curves, etc. at the scanner level, and
I'm not sure how useful it would be for batch scans anyway, unless they
are all under the same lighting and of similar subjects. I've posted
this before, but it may be worth another look. In each case, the same
frame is scanned with and without a profile for the film, with no other
processing <http://galleries.moosemystic.net/VuesProf/index.htm>. See
the help file section on film profiling. It makes a HUGE difference.
>I've realised one thing that might explain the brightness problem
>though. The film I'm using is Fuji NPS which I had rated at 100
>(instead of 160). Vuescan has a film selection for NPS but that would
>be for it rated at 160 I imagine so that could explain why my shots
>are looking so bright, they're 2/3 of a stop over-exposed as far as
>Vuescan's film selection is concerned. The generic film selection gets
>the brightness closer (but still washed out) but the colour isn't as
>good. So my next test is going to be to see if setting the brightness
>to 0.66 to see if that gets me closer.
>
>
Have you tried setting Color Balance to Neutral? That sets teh black and
white points to the brightest and darkest value the sanner produces from
a particular frame. If you use Auto color balance, it sets the white
point to 95%. One of these might get you to the place you want. I
generally use neutral setting.
>Or I may just have to get used to the idea of doing most of the work post-scan
>in PS.
>
>
Remember that you can set up an action to do the same adjustments
automatically to a whole batch of images.
Moose
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