Digital BW, The Print

Daniel Staver wrote:

>>Good news.
>>I asked him several things last week among them to add the Grey Lab and 
>>RGB Lab space profiles of QTR to Vuescan but it will not happen.
>>Well scanning at 16 bit and assigning 2.2 Gamma to the Tiff and 
>>converting that to Grey Lab in PSCS will not change much in the data 
>>anyway but it is a bit less elegant. The other question was for an extra 
>>code for the Nikon 8000 wet mount carrier so I can get the maximum area 
>>possible in one scan on the 8000, it is however hardcoded in the 
>>firmware of the scanner so I can forget that.
>>    
>>
>
>He already fixed the glass holder ten minutes ago.
>
>But now there's some problems with Vuescan recognizing the entire 
>preview area. I can't reach the last (rightmost) frame of a 35mm strip 
>placed on the glass holder. I'm hoping he'll fix that too.
>  
>
Finding the right frames isn't a forte of Vuescan. For 6x6 etc I often 
use separate settings that I load per frame number. But there's also a 
lousy frame spacing in the cameras I use. Batch scanning with the 35 mm 
carrier goes without problems though.

>I had a look inside my 120tf once. I noticed that the way the hardware 
>was designed it would be impossible to scan a larger area than 6x9cm 
>atone time. Basically the film holder is positioned inside a cage with a 
>6x9cm opening, and then the cage and the film holder together is pulled 
>under the sensor to scan the film. Scanning a larger area would require 
>interrupting the scanning, repositioning the holder iside the cage and 
>then doing another scan. Maybe there's something similar going on with 
>the 8000?
>  
>
It is the same in the 8000, a traction unit that clamps the carrier for 
the scan, next frame the carrier is repositioned in the traction unit 
and clamped again. The traction unit has a maximum of 83 mm for the 
length. But the width of scan can vary per carrier and the maximum width 
is the one for the rotatable glassholder that can rotate a 56x83 mm 
frame to 5 degrees. The crop then may be 61 or 63 mm wide, I would like 
to use that for the wet mount carrier but when I use the (hole) code of 
that carrier I have to add an extra code for the mask used in the 
carrier which makes the total more complex. It would have been much 
easier to use a special code for my carrier and the maximum dimensions 
say 63 x 83 mm.

>  
>
>>It needs a wet mount carrier then like I have made for the Nikon 8000.  
>>Never had a 120tf carrier in my hands so can't judge whether it is possible
>>    
>>
>
>You can easily remove the top glass plate and wet mount on the bottom 
>one. I tried it with lighter fluid and it worked well, except that the 
>lighter fluid evaporated too quickly for me to reliably finish the whole 
>scan.
>
>I know you're supposed to cover the film with a second sheet of acetate 
>or something, but then you're back to additional surfaces collecting 
>dust. Is there a reliable way to do this without covering the film with 
>another surface of some sort?
>  
>
I always use an extra sheet of transparent PET on top. The capillary 
force is much better (but my glass is 11 x 27 cm wide) and there's 
almost no evaporation at all (could scan 24 hours later if needed).  
Simco, powered electrostatic brushes + airflow is available and two 
silicon dust collector rolls too. That's what you have when your main 
business has been silkscreen printing on polycarbonates :-) I don't 
believe in mounting without the extra sheet.

Ernst