Apache-Talk @lexa.ru 

Inet-Admins @info.east.ru 

Filmscanners @halftone.co.uk 

Security-alerts @yandex-team.ru 

nginx-ru @sysoev.ru 

   


   


   















      :: Filmscanners
Filmscanners mailing list archive (filmscanners@halftone.co.uk)

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

filmscanners: Grain aliasing (was:Printing A3 from a 2700dpi scan



I've read (but haven't had a need to try it so far) that grain in sky areas
can be corrected/retouched using the blue chanel as a mask. I'd be
interested in hearing from those who've used that technique.

Best regards--LRA


>>I think there may be an issue here with what is "apparent grain" and what
>>is "real grain" and what is "grain aliasing".  In any case, I have yet to
>>find a neg film which *doesn't* show unacceptable amounts of "grain" in
>>things like blue sky, while pretty much *every* slide film gives
reasonable
>>results.

>I think what you may have here derives in part from the sky and other
nominally bright parts of images on negatives being the darkest -- most
dense -- in the film.  So sky in negs can be more difficult and show grain
and/or noise much like dark shadow areas of slides are the difficult parts
to scan and image.


-----------------------------------------------
FREE! The World's Best Email Address @email.com
Reserve your name now at http://www.email.com





 




Copyright © Lexa Software, 1996-2009.