Digital BW, The Print

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


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