Re: Scanning negatives
Re: Scanning negatives
- Subject: Re: Scanning negatives
- From: Rolf Gierling <email@hidden>
- Date: Sun, 04 Mar 2001 21:59:31 +0100
Tara Marlowe wrote:
>
>
Can anyone explain the basic differences between scanning negatives and
>
transparencies. My impression is that is is more difficult to scan negatives
>
but I'm not sure what the problems are or what needs to be done differently.
Main difference that as well the film material of the negative as the
paper you
finaly _print_ at have strong nonlinearities in exposure. On
transparencies
you have the exposure our eye is _pleased_ with.
So the scanning software has to do 1.) inverting (the negative),
2.)removing the
color the film material has and 3.) building the tone reproduction curve (nonlinearity)
the paper has. This is not easy.
Rolf Gierling