Digital BW, The Print

DCRAW is the tool that Charlie and Lloyd have been using with the filtration.  I don't know of another RAW processor that offers the advantages of DCRAW.  However, Raw Drop is apparently based on DCRAW, and adds a graphical interface.  It isn't, however, as flexible as DCRAW itself.
 
Tom Baker


John Moody <moodymz3@...> wrote:
Paul,
If you have not tried it already, you may wish to use Dave Coffins DCRAW
program as an instructive tool. In document mode, it can map the raw file
to a linear 16-bit grayscale image without demosaicing. I think it sets
black to 0, but it outputs the offsets for reference; not exactly sure.
There is a red and blue scaling option that could help in the generation of
bayer pattern layer masks, by blowing that color pixel non-zero values to
white.
It would eliminate the behind the scenes things that ACR and other
converters do. Perhaps that would allow you to numerically assess the
dynamic range of the raw image and compare it with ones where various
filters were used? Perhaps this is all too geeky to be of value..
You can get compiled windows executables at
http://home.arcor.de/benjamin_lebsanft/

Best regards,
John Moody

-----Original Message-----
From: DigitalBlackandWhiteThePrint@yahoogroups.com
[mailto:DigitalBlackandWhiteThePrint@yahoogroups.com]On Behalf Of Paul Roark
Sent: Friday, July 08, 2005 2:11 PM
To: DigitalB&WPrint
Subject: [Digital BW] "Digital zone system" via filters (?)

I've occasionally made references to some tricks that might be able to
expand the digital dynamic range. I think it is time that this group focus
on one of these in particular.



A small group of off-list B&W shooters has been pursuing an idea that was
originally proposed by Charlie Bustamante and Lloyd Baggs. Tom Baker, Lloyd
and I have been trying to follow up on Charlie's idea with both promising
and mixed results. Based on some outstanding prints shown to me that Llyod
made, and the elegance of the concept, I think there is potential, and I
think this group has the expertise to push the idea - forward or into the
dumpster if that is where it belongs.





[Non-text portions of this message have been removed]



Please visit the Group Homepage to check the Files, and other resources as they are often being updated.

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:
- As threads develop, trim off excess portions of earlier messages to keep them short.
- Good manners are required at all time. No personal attacks or flames. Hostile, aggressive or argumentative users may be removed from the membership without notice.
- Keep your posts and threads related to the group topic of digital B&W printing. Users who persistently make off-topic posts may be removed from the membership.
- By posting on this forum you agree to abide by the group rules and guidelines, and to abide by the actions and decisions of the group Owner and Moderators. See “Group Topic, Rules and Guidelines” in the Files section:
http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint/files/

BY PARTICIPATING IN AND/OR POSTING MESSAGES TO THE DIGITAL BW, THE PRINT YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE “OWNER” AND “MODERATORS” OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE LIABLE TO YOU FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA OR OTHER INTANGIBLE LOSSES (EVEN IF THE “OWNER” AND “MODERATORS” OF DIGITAL BW, THE PRINT YAHOO GROUP HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES), RESULTING FROM: (i) THE USE OR THE INABILITY TO USE THE DIGITAL BW, THE PRINT YAHOO GROUP; (ii) UNAUTHORIZED ACCESS TO OR ALTERATION OF YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR CONDUCT OF ANY THIRD PARTY ON THE DIGITAL BW, THE PRINT YAHOO GROUP; OR (iv) ANY OTHER MATTER RELATING TO THE DIGITAL BW, THE PRINT YAHOO GROUP.

Yahoo! Groups Links








[Non-text portions of this message have been removed]