Re: filmscanners: Vuescan long pass mode

[Arthur Entlich <artistic@ampsc.com>]

Hi Ed,

How does the Minolta Dimage Dual Scan  II (USB version) compare with the 
Canon FS2710 in terms of using overexposure scanning?

Art

EdHamrick@aol.com wrote:

> In a message dated 2/8/2001 9:33:58 PM EST, bjs1@home.com writes:
> 
> 
>> Are you sure it works on other CCDs ?
> 
> 
> Yes, with varying degrees of success.
> 
> 
>>  For example I used a pin and poked three different size holes in a very 
> 
> dark
> 
>>  Provia 400F slide.   The 2 pixel hole showed no charge bleeding, the 10
>>  pixel hole showed medium charge bleeding and the 40 pixel hole showed a far
>>  amount of bleeding.   In all cases, the red seemed to bleed more than the
>>  green which bled more than the blue.  Also the bleed seems to be only in 
> 
> one
> 
>>  direction.
> 
> 
> Yes, other people have reported these same characteristics of the
> CCD in the Canon FS2710.
> 
> I've been saying on this mailing list for more than a year that
> overexposing the CCD would have charge bleeding problems.
> This limits the usefulness of the long exposure feature on
> some scanners.  It's a hardware limitation, and there's not a
> lot I can do to work around it.
> 
> Regards,
> Ed Hamrick