Digital BW, The Print

Hi Andy,

I think you are referring to a space-saving suggestion from Phil. His idea is 
that you res down from an original high res file only in order to add adjustment 
layers wih their masks. When you res back up to the original resolution, you 
_substitute_ your base (background) file with the original scan. The idea is 
that your curves and masks don't hold much by way of image detail. It's all in 
that background layer. So all you did is "res-up" a bunch of grayscale masks 
and curves which don't depend much on resolution.
No one is suggesting resing up a  low res file as a good solution to high 
quality. In a pinch, people use Genuine Fractals - but that's another story.

Welcome to the list, by the way!
When you respond to digests, it would help to change the subject line to 
whatever your message is about so others can see and respond.
Also a good idea to quote whose message your comments refer to so we can 
keep continuity in our discussions.

Hope this helps.

Antonis 


--- In DigitalBlackandWhiteThePrint@y..., Andy Levin <mojogroup@y...> 
wrote:
> I'm new to the list and following the "res up"
> (resample) discussion.  I see the advantage of merging
> the adjustment layers to save size, and when you
> resample down you lose no detail and save file
> size.....but if you ask Photoshop to resample up, and
> add spi to you file, it will do that mathematically. 
> My understanding is that this will lower the quality
> of the file, as scanned samples are replaced by
> Photoshop interpolated ones.
> 
> Why would anyone want to do that?  Or is that just a hypothetical?