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Author Topic: RawTherapee  (Read 100886 times)
robgo2
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« Reply #100 on: November 22, 2012, 02:14:50 PM »
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There were challenges in producing the Mac builds due to redesign and optimization of the build process. The official RawTherapee build, including the Mac version, is being planned for December this year.

When the official Mac version is released, I will probably take it for a test run.  While I do not consider myself a technical wizard, I am pretty good at coaxing high quality output from the software that I use regularly.  I can accept RT having some features that are comprehensible only to those with very high technical skill levels, but at the very least, it must also have basic features that are comprehensible to the vastly larger number of users with only moderate skill levels.  Believe me, if I can get results that equal or exceed RPP+PS, then I will be both pleased and surprised. 

Rob
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Hening Bettermann
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« Reply #101 on: November 23, 2012, 02:49:49 PM »
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Did you try the RTMX build I linked to above?

kirk

I did. The generic icons are replaced by real ones, but it still crashes when I double-click a thumbnail to open the image. Looking forward to the official Mac release in december.
BTW
Reading the manual, I saw things I never saw before.
"ICC/DCP Specific Daylight White Balance Values
The daylight white balance temperature values used by your camera and commonly referred to in literature and on the internet are averages. The precise temperature and tint combination you should use for daylight photos is specific to the ICC or DCP input profile auto-matched to your camera by RawTherapee. This will give you a technically color-accurate image where whites are white, though aesthetically it may not be what you want."
For the Canon 5D, the values are given as temp 4994, tint 0998.
I have 2 questions:
1- "The precise temperature and tint combination you should use for daylight photos is specific to the ICC or DCP input profile auto-matched to your camera by RawTherapee"
Does this mean that RT enters these values automatically, or that I shall enter them manually? (If and when I get the Mac version up and running, or grit my teeth and use Windows)?
2-What would the values be for the Canon 5D2?
Curious - Hening
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Hening Bettermann
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« Reply #102 on: November 23, 2012, 03:11:27 PM »
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Found the answer to question 1 on page 36 of the manual:
"Auto-matched camera-specific profile
Uses RawTherapee's camera-specific DCP input profile that is more precise than a simpler matrix (and fall back to lesser powerful ICC profiles if no DCP is available). Available for some cameras, these profiles are stored in /dcpprofiles (or fallback /iccprofiles/input) directory and are automatically retrieved based on file name matching the exact model name of the camera."
Read first, ask later!
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MichaelEzra
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« Reply #103 on: November 23, 2012, 03:20:58 PM »
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Hi Hening, the Daylight temperature & tint values you quoted are not set automatically within RT based on camera model, they are provided as a reference.
These values require use of a correct input camera profile, which as you noticed, is provided automatically for some camera models in DCP format. These profiles are measured to be very accurate.
For other camera models a simple DCRAW camera matrix is used instead.

If you are interested, there is an additional document on colorimetry in RT:
www.rawtherapee.com/shared/RawTherapee_Colorimetry.pdf
and recent document  on implementation and use of CIECAM02:
http://jacques.desmis.perso.neuf.fr/RT/ciecamRT3.html
Credit to excellent work of Jacques Desmis.
« Last Edit: November 23, 2012, 03:25:14 PM by MichaelEzra » Logged

Hening Bettermann
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« Reply #104 on: November 23, 2012, 04:37:14 PM »
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Thank you , Michael, for your answer and the links. I'll read the first one with great interest. (I don't speak French).
-Hening.
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kirkt
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« Reply #105 on: November 23, 2012, 05:33:23 PM »
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Quote
I did. The generic icons are replaced by real ones, but it still crashes when I double-click a thumbnail to open the image. Looking forward to the official Mac release in december.
 [\quote]

I'm sorry to hear it crashed. Did you follow all of the install instructions?  There are some extra steps required beyond simply downloading the compilation and running it.

Hope this helps.

Kirk
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Fine_Art
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« Reply #106 on: November 24, 2012, 01:32:52 AM »
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I just downloaded 4.0.9.5

The detail looks pretty good. This is a shot out of a stitch, 5km (as the crow flies) away with a Minolta 300G f4 on the Sony A55. 450mm effective. The shot is shrunk for bandwidth to 1/3rd
100% crop out of it follows

That is from Cypress Mountain lookout to Ambleside beach (West Vancouver) on a summer sunset so air currents are a bit of an issue.

The detail is decent.
« Last Edit: November 24, 2012, 01:34:41 AM by Fine_Art » Logged
Hening Bettermann
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« Reply #107 on: November 24, 2012, 08:52:28 AM »
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Hi Kirk
Thank you for your concern.
Which are those instructions? I did not see any, beyond instruction to download and install a special version of X11 for MacOS 10.5, but I am on 10.6.8.
Maybe I can make it work anyway?
Hening.
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Hening Bettermann
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« Reply #108 on: December 03, 2012, 12:30:11 PM »
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Hi

I need to get back to the paragraph of the RT manual I quoted in post 337. I still have 2 questions:

1-What is meant by "auto-matched to your camera by Raw Therapee"? What is it that is done automatically? Does it mean that for some cameras, there are profiles measured to that precision, and these profiles are retrieved automatically; for other cameras, it is advised to enter these values in the creation of the profile? Or in the individual image?

2-The figures given are on a precision level down to 1 Kelvin for Temperature, 3 post-comma digits for Tint, e.g. for the Canon 5D 4993 K, 0.998.

"This will give you a technically color-accurate image where whites are white"

"Daylight" changes over a wide range (even if we exclude clouds and shadow). With that level of precision, the figure must refer to one very specific daylight - or? How is this defined?

Kind regards - Hening
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MichaelEzra
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« Reply #109 on: December 03, 2012, 12:58:22 PM »
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Hi Hening,

1. If Auto-matching is selected, RawTherapee will try to the following , in this sequence:
 a. locate a DCP profile in /dcpprofiles or
 b. if DCP is not found, locate an ICC profile in /iccprofiles or
 c. if DCP and ICC are not found, revert to hard-coded camera matrix.

Matching is dome by camera name, exactly as is shown in the info sectinon in the editor. E.g. "Canon EOS 5D Mark III.dcp"

Camera matrix values are generally from dcraw, but in some cases have custom overrides based on measurements with ColorChecker24

2. Referenced WB values are for mid-day daylight. You are right, "daylight" is a very broad term... it varies with day time, season and geo location. If you need further info, I'd suggest to post this question in rawtherapee's own forum. DrSlony & Jacques might help.
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Hening Bettermann
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« Reply #110 on: December 03, 2012, 03:16:36 PM »
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Hi Micheal, thank you for your answer. Hening.
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Vladimirovich
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« Reply #111 on: December 05, 2012, 02:25:48 PM »
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didn't I just read that "oduis" is leaving (or left)... what happened, did he join the dark side (=decided that ACR/LR are good enough) ?
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MichaelEzra
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« Reply #112 on: December 05, 2012, 02:42:23 PM »
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Yes, due to time constraints and also availability of "good enough" Lightroom, Olli will continue to provide Windows builds, but not code for the project.
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Vladimirovich
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« Reply #113 on: December 05, 2012, 03:23:29 PM »
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Olli will continue to provide Windows builds
at least something... I used to go to visualbakery to download the builds
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Fine_Art
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« Reply #114 on: February 18, 2013, 03:08:56 PM »
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I did. The generic icons are replaced by real ones, but it still crashes when I double-click a thumbnail to open the image. Looking forward to the official Mac release in december.
BTW
Reading the manual, I saw things I never saw before.
"ICC/DCP Specific Daylight White Balance Values
The daylight white balance temperature values used by your camera and commonly referred to in literature and on the internet are averages. The precise temperature and tint combination you should use for daylight photos is specific to the ICC or DCP input profile auto-matched to your camera by RawTherapee. This will give you a technically color-accurate image where whites are white, though aesthetically it may not be what you want."
For the Canon 5D, the values are given as temp 4994, tint 0998.
I have 2 questions:
1- "The precise temperature and tint combination you should use for daylight photos is specific to the ICC or DCP input profile auto-matched to your camera by RawTherapee"
Does this mean that RT enters these values automatically, or that I shall enter them manually? (If and when I get the Mac version up and running, or grit my teeth and use Windows)?
2-What would the values be for the Canon 5D2?
Curious - Hening

I had the crash for a while, it made me go back to the last "stable" release 3.something. Recently I tried again with 4.0.9.50 x64. It is working well.

I also figured out my old color problems, no doubt user error without setting my camera , camera auto WhiBal, Auto levels, in a default profile loaded in preferences.

Now the color is wonderful. I was pleased enough that I bought a bottle of good bourbon to celebrate. I usually only buy liquor < 5 times per year.
The detail was always wonderful.

This is me.  Grin
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Fine_Art
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« Reply #115 on: February 18, 2013, 04:44:36 PM »
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How Awesome is it?

This is a shot out of a pano that had my auto WhiBal totally lost. Something that almost never happens.

This is it fixed with spot WhiBal and Lab adjustments.
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Fine_Art
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« Reply #116 on: March 17, 2013, 12:15:02 PM »
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This is an old shot of Bart's Siemen's Star resolution test. I thought I would re-render it with the new RT 4.0.10.0

SHARPENING IS OFF.
The view is 200%
The red circle is the Nyquist limit 92 (x2 for 200%)
The shot was in autoISO at 1250 Sony A55 with 100 Macro

The second shot is the same with R/L deconvolution on.

Contrast by detail is set at contrast+ for all 3 shots which is 1.2 for the finest,then 1.15,1,1,1.05 for the coarsest. This gives a small bump to resolution at the expense of a perfect sine wave on the chart.
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Fine_Art
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« Reply #117 on: March 17, 2013, 12:24:34 PM »
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Also attached is the JPG output of the program R/L sharpening on, NR off, everything else the same.

 
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Hening Bettermann
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« Reply #118 on: April 12, 2013, 05:35:56 PM »
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Now that Raw Therapy has come to the Mac, I'd like to check it. I looked for an option to output a TIF with zero color management for creating a custom camera profile, but could not find one. Did I overlook it?
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MichaelEzra
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« Reply #119 on: April 12, 2013, 05:42:44 PM »
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It is in tab "Color", section "Color Management".
Press on the Button "Save reference image for profiling".
BTW, the 4.0.11 version should be out in a few days.
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