White Point clipping, Black Point not, and Brightness usually needs heavy upping.

  • Thread starter Thread starter Phil
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Phil

It seems that all slides I am scanning (mostly Fuji) have some White
Point clipping and very high Black Point numbers. Using the "Clipped
Black Color" feature, I am finding the point at which clipping begins
(in the link below it is 2.8) and then setting my Black Point to 2.6.
White Point I am leaving at 0 and there is still a tiny bit of
clipping, and not just from light sources. (For instance, yesterday I
couldn't get rid of white clipping on a forehead highlight so I had to
use Nikon Scan.) A typical Vuescan histogram, along with the resulting
Photoshop histogram looks like this:
http://www.philipscalia.com/vuehist.jpg
In the example, BP clipping in Photoshop starts at Input level 17.
In addition, though I have brightness set to 1.18, the image often
benefits from gamma slider adjustment in PS to 1.3, 1.4 or even
higher. I touched on this in a previous post but thought I'd start
fresh with the visual aid and 2 days more experience. Except for these
seemingly strange numbers, the images seem to look pretty good in
Photoshop.
Should I continue doing what I'm doing, or what? By the way exposure
clipping is set to .1%, and doesn't seem to change the histogram if
set to 1%.
As mentioned in the previous post I have set Adobe RGB as the Output
color space. This is preferred for stock photography. I suppose I
should experiment with that since a couple of you have said this could
be my problem. Monitor color space has been set to an icc profile -
PhotoCal.
Thanks to everyone for the great advice which has been a big help,
Phil
 
Phil,
I am not sure to understand what your problem is.
I use only Fuji films (Provia 100F, Astia) and now the new Velvia 100F
(names in Europe), and I don't have to 'push' the brightness. I never
used the Velvia 50 , but I think it's more difficult to scan.
Your BP and WP settings seem odd to me.
IMHO, you should try Media type = Image , BP=0% , WP very low but not
nul, say 0.02% , Brightness = 1 , Color balance=Neutral and right
click on an area you know should be neutral.
Bernard
 
Bernard,
So glad you responded. The trick was changing the Media Type to Image
(was Slide Film). Now I have a histogram that looks like a nice bell
curve. Color balance is still set to White Point, maybe I'll try to
experiment with this too. But for now, this problem is solved.
Many thanks!
Phil
 
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