I am still having trouble with bright pixel clipping with VueScan and my SS4000. I am scanning 35mm color transparencies--Velvia and ProviaF--and using Image as Media Type.
I just did comparison scans of a landscape with deep shadows and bright clouds. Using VueScan with the white point setting way down to 0.02 and the black point at 0 and using the White Balance setting, I am still seeing clipping of the brightest pixels once the image is imported into Photoshop. The VueScan "gray" histogram looks as though the line reaches zero at the far right end of the graph. However, using the ALT+click on the white point triangle in the Levels dialog box of Photoshop shows the clipping of bright pixels in some of the clouds. When I use Polaroid's Insight to scan the same slide, the brightest pixels are well below the white point in the Photoshop histogram. There is no clipping. I tried scanning with the Color setting at Neutral rather than White Balance. That results in moving the entire "gray" histogram to the left, but there is still bright pixel clipping when I look at the histogram in PS6. I used PS to look at the R,G and B channels in the levels dialog box. The bright clipping seems to be in the blue channel, for what it's worth. The image scanned by Polaroid's Insight doesn't show this phenomenon. Stan ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body