Digital BW, The Print

Why do it yourself while there are more knowledgeable people (maybe you're a scanning expert but I'm not for sure) than me doing all the necessary tests (which I can't do due to the lack of a densitometer) in correct methodology to provide film profiles? I care more for "usable data" than a raw "all data" and I wouldn't go far as claiming "I know better than scanner hardware and/or software engineers" - such as people at Silverfast or Ed Hamrick. Aren't the film profiles provided in Silverfast and alike softwares designed by "professionals" for doing RGB to grayscale convertion "in the right way"? Please note my "linear" comment about channel mixer. If you examine profiles in Silverfast in advanced mode you'll notice that they are "non-linear". This fact makes me think that these profiles are more useful/successful than the linear convertion I would apply (loosely) by the means of channel mixer. Anyway, I feel more comfortable and productive in scanning thanks to these profiles, dot. YMMV.

Regards,
Loris.

---- Orijinal Mesaj #1 ----
Kimden: julianthomas@...
Kime: DigitalBlackandWhiteThePrint@yahoogroups.com
Bilgi: 
Konu: Re: [Digital BW] SilverFast Ai 6 question
Tarih: 5/13/2003 6:54:47 PM
I feel Austin about to pounce! All scanners scan in RGB mode and convert and
invert in the scanner s'ware. CCD scanners tend to have some channels of the
RGB more accurate than others , red blooms for instance and on some of my
scans has more noise in the shadows, by doing the conversion yourself you
can fine tune the conversion. You also have 'all the data' if you scan in
raw even if you scan as a 16bit greyscale and let the s'ware do the RGB
conversion. i agree with you about the RAM issue though. But before we know
where we are folk will be using AF cameras and inbuilt exposure meters if
you let the software do all the work...

Julian

----- Original Message ----- 
From: "Loris Medici" <lorism@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Tuesday, May 13, 2003 4:38 PM
Subject: RE: [Digital BW] SilverFast Ai 6 question


> Hello Julian,
>
> I don' undestand why should I scan a grayscale image in RGB mode? I do
> it in 16bit mode always and never use channel mixer. This is not about
> the most accurate data but inconvenience - I save time and RAM by using
> the canned profiles instead channel mixer (an additive step) which is
> "linear" and grayscale mode. My point was more about misinformation.
>
> Regards,
> Loris.



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