Digital BW, The Print

"Strange", as I always say when someone reports me a bug :-)
But interesting. What scanner are you using?
 
Alessandro

-----Original Message-----
From: Daniel Staver [mailto:daniel@...]
Sent: Thursday, May 29, 2003 19:34
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: RE: [Digital BW] Re: Scanning


I just had a roll of HIE that was nearly impossible to scan. I got
detail all right, but there was horrible streaking in the image. By
increasing the exposure to very high values (20-50) I got rid of the
streaking, but the brightness of the image didn't change at all. I
really don't know exactly how the exposure setting works, but it gave me
usable pictures from a roll of film I feared would be impossible to
save.

--
Daniel Staver
http://daniel.staver.no <http://daniel.staver.no> 

> -----Original Message-----
> From: Alessandro Pardi [mailto:alessandro.pardi@...] 
> Sent: 29. mai 2003 19:24
> To: 'DigitalBlackandWhiteThePrint@yahoogroups.com'
> Subject: RE: [Digital BW] Re: Scanning
> 
> 
>  Hi Austin,
>  
>  >  Hum.  My scanner only changes exposure time (at least 
> calculates exposure  >  time) during calibration, when it is 
> basically calibrating the bulb and the  >  PRNU for the 
> sensor.  I DO have manual control of the exposure time, so I  
> >  can change it my self...but the scanner doesn't 
> re-calibrate for the film.
> 
>  I see. So what both you and Kevin are saying is basically 
> that the scanner, during calibration,  finds a 
> "one-size-fits-all" exposure time? Then I wonder where 
> Vuescan gets the numbers from when it displays the exposure 
> time. I mean: if I make a preview and then click "Lock 
> exposure", appears a textbox with the exposure time (which 
> I'm free to change) used for preview, and it changes from 
> image to image, and it also changes if I select a different 
> portion of the same image and preview again. I was pretty 
> sure that the scanner evaluated each image, and set the 
> exposure time accordingly, but now you make me think again... 
> Next time I have a couple of hours free (I wish I could play 
> with my 3200 more often than I do, family duties call :-), 
> I'll try to see how long it takes to scan the same image with 
> different "exposure times".
>  
> Alessandro
> 
> 
> [Non-text portions of this message have been removed]
> 
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