Input Profile
Input Profile
- Subject: Input Profile
- From: Dave <email@hidden>
- Date: Thu, 28 Dec 2000 15:19:54 -0500
I'm forwarding an e-mail that we sent to Itec tech support 1 week ago.
I still await an answer and was hoping that someone else has either
experienced the same or might have some idea's.
If Marc Aguilera is monitoring the list this week I would welcome
you're thoughts also. Thanks, Stretch.
Hi, This is Steve at Stretch Studio. I have been trying to adjust an
input profile of the Lightphase digital camera we use. I generated the
custom profile in Colorblind Profiler+ with a Gretag Macbeth chart. I
got "good" results but need to pull some red out of it as we shoot quite
a bit of furniture and have had our brown's going too red.
The way I attempted to adjust the profile was to embed our custom
profile in an image and open that image in CB Edit. No destination was
chosen. I read off of the actual piece of furniture with the color mouse
in CB Spot to get some LCH values to compare. I then compared those
values with the values off the image in Edit. Using Global edits I
adjusted the reds to approximate the LCH values I want. Next I saved the
profile...Type:Input...Includes:Input edits, Other edits. I then
reprocessed the image in our camera software embedding the new custom
profile. Opening that image in Edit showed me no changes to the
image...the new profile had no effect.
All of this work was done on a G4, OS 8.6, Colorsync 2.6.1,
ColorBlind MatchBox 4.0. I tried doing the profile adjustment with Edit
2.5.4 after the first couple of attempts with no success. I tried moving
to our second G4 and duplicated what I did again. No luck. Global edits
alone would not register in the new profile. I tried switching to an
abbreviated extension set using the base system set with only the
extensions I needed for the color mouse. Still no luck. I then moved to
our G3 Powerbook(9.04/cs 3.01) and performed the same steps. On this
machine I could
get a change in the new profile by making just Global edits.
Next, back on the G4, I tried to give Edit a little more to go
on...I adjusted the Input LUT's and then adjusted Global color. Saved
this profile and this new custom profile DID work, though it wasn't
quite what I wanted as far as color is concerned. The LCH values in the
image with this new profile didn't match the target LCH values though
visually I was closer than before. I am not sure the Global edits were
included in the new profile though I am confident the Input LUT's edits
were.
That's it. I hope I gave you enough to go on. Please let me know if
you have any questions. Thanks much. Have a great holiday.
Steve (@Stretch Studio)