Digital BW, The Print

Thanks, just working through your flow now but I don't seem to get an 
IR channel in PS7.  I am scaning B&W negs using a Nikon CS IV through 
Vuescan with 64 bit RGBI and no IR correction but only 3 channels are 
shown in PS and the file size is similar to a normal 3 channel scan.  
What am I missing?  Is it because you can't scan IR through Ag negs?

Thanks

Gareth

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Daniel Staver" 
<daniel@p...> wrote:
> I'll post this in the group since it might be of interest to others:
> 
> I use a Canon CanoScan FS4000US scanner. You could have a copy of my
> action, but there's not much to it, and it might be specific for my
> scanner, so here's the procedure instead:
> 
> 1. Scan the image as 64bit RGBI TIFF in Vuescan. This produces a 48 
bit
> image with an additional 16bit IR channel.
> 
> 2. Select IR channel in photoshop.
> 
> 3. Apply Auto levels without clipping.
> 
> 4. With my scanner the lighter part of the histogram contains 
excessive
> noise and streaks with a ghostlike copy of the image. Clip this
> information by setting the white point in levels. For me that's 
about
> 185.
> 
> 5. Invert the channel.
> 
> 6. Convert to 8bit.
> 
> 7. Go back to RGB/Grayscale channel and load a selection from the IR
> channel.
> 
> 8. Use the Patch tool in 'Source' mode and drag the selection to a
> dust-free part of the image.
> 
> That's it!
> 
> 
> A couple of things:
> 
> - You might want to expand the selection by 3-5 pixels before 
applying
> dust removal
> 
> - Step 8 is not perfect and could be replaced by another dust 
removal
> procedure. When you drag the selection using the patch tool you
> sometimes end up using data from a part of the image that's too
> different resulting in weird artifacts. If you find something that 
works
> better, please let me know. Thanks!
> 
> 
> --
> Daniel Staver
> http://daniel.staver.no