Weeeeeell - possibly <g> One of the reasons that i scan raw is that i
started doing this before Vuescan or Silverfast had usable profiles. However
I still think it is a valid approach as there is no such thing as a
standard neg. For example - I develop everything in DiXactol, a staining
developer. So my Delta neg is going to look a whole lot different to yours.
I used to develop TriX in Xtol with minimal agitation and my negs were
different to a colleague's who used a different dilution and agitation
method. Scanners also vary. My first ss4000 had to go back to the shop and
was replaced but an RGB scan of a blank neg showed a totally different RGB
histo to what the replacement produced. so a canned profile is even worse
IMO than a canned printer profile. IT8 calibration is only valid if you scan
the same film-type as the target i.e. tranny, so some kind of visual and
manual control is necessary. In the last Vuescan release Ed acknowledged
that negs are harder to scan than tranny and has added new controls to deal
with the extended dynamic range as auto can be less satisfactory. However, i
mention all this only for discussion - a wise man says from time to time,
'make art' and whatever works for each individual is valid IMO. I know
someone who scans colour negs in RAW and strips the orange mask and inverts
by hand - crazy or what?
JUlian
----- Original Message -----
From: "Loris Medici" <lorism@...>
To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
Sent: Tuesday, May 13, 2003 11:36 PM
Subject: Re: [Digital BW] SilverFast Ai 6 question
> 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.
>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> Please visit the Group Homepage to check the Files, Bookmarks, Polls and
other resources as they are often being updated. The page is at:
>
> http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint
>
> If you wish to receive no emails or just a daily digest, or you wish to
unsubscribe, please edit your Membership preferences by visiting this same
page.
>
> Please follow these basic guidelines:
> - Include your full name with your message.
> - Include the address of your website, if you have one.
> - As threads develop, trim off excess portions of earlier messages to keep
them short.
> - As the topic of a thread changes remember to change the subject header.
> - Good manners are required at all time. No personal attacks or
&amp;quot;flames.&amp;quot;
> - Complete your Yahoo profile.
> - Before posting a question, search the message archives and the various
resources on the homepage.
Show quoted textHide quoted text
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>