On 8 Apr 2005 at 23:24, Malcolm Stewart wrote:
> ----- Original Message -----
> From: <[EMAIL PROTECTED]>
> To: <[email protected]>
> Sent: Friday, April 08, 2005 2:43 PM
> Subject: EOS OT: Lossless JPG cropping tool needed
> >
> > I used a Nikon Coolscan 5000 to batchscan
> > several thousands of EOS slides..
>
> How did you cope with the increase in contrast?
> I had a go at this using my Nikon CP4500 imaging slidess taken on Provia
> 100F shot with my EOS3. The increase in contrast (whatever settings I tried
> in camera) was simply too much, unless the original had very low contrast.
> Tried again but this time using my EOS10D, and the results were quite
> acceptable.
I wonder whether the old analog trick of a preflash would work on
digital sensors too?
This was even implemented in German semi-consumer-range slide-copiers
(with Novoflex bellows, customized to accept a tiny pre-flash cone in
the side of the bellows (creating a homogenous white image, at very
low intensity, just enough to decrease contrast....in 3 adjustable
settings)
Tricky to fabricate this yourself, even more without a bellows (like
a rigid-tube slide-copier).
--
Bye,
Willem-Jan Markerink
The desire to understand
is sometimes far less intelligent than
the inability to understand
<[EMAIL PROTECTED]>
[note: 'a-one' & 'en-el'!]
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