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Problems with color when importing a .dng into photoshop cs3

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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #60 on: 08 / March / 2009, 13:20:59 »
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zosX - Where is the "Hit the calibrate button" on DNG4PS2?
I can't find it  :-[

Here you are the .CRW file, shooted how you say, blured (I don't know how much is 50% blur, if you want I will give you not so much blured).
http://www.easy-share.com/1903947692/CRW_1197.CRW

Please help...
I've also tryed your color matrix and is the same as DNG4PS2 original for A590IS. Maybe a little bit unsaturated, but not sure.
A590IS user

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Offline zosX

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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #61 on: 08 / March / 2009, 13:26:03 »
Under the settings....then camera options....then color matrix #1...there should be a calibrate button there. Sorry wrote my instructions from memory. :)

Oh, and the original profile was pretty close, but not close enough for my liking. I wanted to see if anyone thought my custom matrix was any better. I guess I could look at histograms of the jpegs and dngs but that is problematic because the white balance is basically unknown. This method seems to work pretty ok and was a great idea. (Thanks dng4ps2 people!)
« Last Edit: 08 / March / 2009, 13:28:41 by zosX »

Re: Problems with color when importing a .dng into photoshop cs3
« Reply #62 on: 08 / March / 2009, 13:47:20 »
OK, there I choose the RAW (.CRW) image and automaticaly finds the JPG, press "Process" and the program (PNG4PS2) crashes  ???
A590IS user

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Offline zosX

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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #63 on: 08 / March / 2009, 13:53:00 »
Oh...you have to draw boxes around the colors...You have to set zones for it to process on. That's how it works. Makes sure that there is uniform color when you draw. it helps to look at the raw...


Re: Problems with color when importing a .dng into photoshop cs3
« Reply #64 on: 08 / March / 2009, 14:38:21 »
this is way too hard for me  :blink: I have no PREVIEW of the image, how to know what kind of parameters to set?
A590IS user

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Offline zosX

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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #65 on: 08 / March / 2009, 19:00:22 »
you have to maximize the window.
« Last Edit: 08 / March / 2009, 20:36:17 by zosX »

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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #66 on: 28 / March / 2009, 07:00:20 »
CALCULATION
Area 1
jpeg color r=0.50, g=0.08, b=0.37
camera color r=0.21, g=0.12, b=0.08
Area 2
jpeg color r=0.00, g=0.01, b=0.18
camera color r=0.00, g=0.02, b=0.03
Area 3
jpeg color r=0.08, g=0.39, b=0.00
camera color r=0.09, g=0.17, b=0.03
Area 4
jpeg color r=0.37, g=0.01, b=0.00
camera color r=0.14, g=0.04, b=0.01
Area 5
jpeg color r=0.60, g=0.47, b=0.53
camera color r=0.28, g=0.31, b=0.14
Area 6
jpeg color r=0.69, g=0.57, b=0.52
camera color r=0.34, g=0.38, b=0.15
Area 7
jpeg color r=0.77, g=0.67, b=0.51
camera color r=0.42, g=0.47, b=0.16
Area 8
jpeg color r=0.53, g=0.66, b=0.19
camera color r=0.29, g=0.39, b=0.10
Area 9
jpeg color r=0.42, g=0.63, b=0.12
camera color r=0.24, g=0.35, b=0.09
Area 10
jpeg color r=0.45, g=0.66, b=0.58
camera color r=0.25, g=0.39, b=0.15
Area 11
jpeg color r=0.55, g=0.70, b=0.04
camera color r=0.31, g=0.39, b=0.08
Area 12
jpeg color r=0.73, g=0.64, b=0.43
camera color r=0.39, g=0.43, b=0.15
Area 13
jpeg color r=0.66, g=0.71, b=0.56
camera color r=0.35, g=0.46, b=0.17
Area 14
jpeg color r=0.78, g=0.70, b=0.46
camera color r=0.44, g=0.49, b=0.16
Area 15
jpeg color r=0.00, g=0.02, b=0.24
camera color r=0.01, g=0.03, b=0.04
Area 16
jpeg color r=0.59, g=0.17, b=0.37
camera color r=0.25, g=0.17, b=0.10
Area 17
jpeg color r=0.23, g=0.52, b=0.16
camera color r=0.16, g=0.27, b=0.08
Area 18
jpeg color r=0.35, g=0.25, b=0.15
camera color r=0.17, g=0.17, b=0.06
Area 19
jpeg color r=0.56, g=0.65, b=0.07
camera color r=0.31, g=0.37, b=0.08
Area 20
jpeg color r=0.77, g=0.49, b=0.25
camera color r=0.40, g=0.36, b=0.11

RESULTS
White area: 13
Errors:
Zone 1: 7.0%
Zone 2: 9.2%
Zone 3: 9.4%
Zone 4: 9.5%
Zone 5: 8.6%
Zone 6: 7.4%
Zone 7: 5.5%
Zone 8: 2.9%
Zone 9: 8.8%
Zone 10: 9.1%
Zone 11: 2.2%
Zone 12: 3.6%
Zone 13: 5.7%
Zone 14: 9.4%
Zone 15: 9.5%
Zone 16: 3.2%
Zone 17: 6.2%
Zone 18: 7.6%
Zone 19: 3.5%
Zone 20: 8.5%
Camera -> XYZ matrix:
0.983613 0.279535 0.814647
0.154812 1.559721 -0.447597
-0.195736 -0.653666 5.720120
XYZ -> Camera matrix:
1.023507 -0.252814 -0.165548
-0.094643 0.686256 0.067178
0.024208 0.069771 0.176833


20 zones are good enough?? I think I've just perfected the matrix for the 590IS rev 1.01B.

First of all the noise on the CCD makes this calibration really HARD. It took two hours to get 20 zones out of my crappy test image. Secondly I highly recommend anyone attempting this get a test target and shoot that in really bright light. Underexposure leads to noise which makes everything all the more difficult.

Test files are at: http://rapidshare.com/files/214496507/test.zip.html

Sorry they are kind of crappy. I didn't realize how dirty that target was until I looked at the files at home.
« Last Edit: 28 / March / 2009, 07:02:59 by zosX »

Re: Problems with color when importing a .dng into photoshop cs3
« Reply #67 on: 29 / March / 2009, 11:01:31 »
zosX - it will be very good if you write instructions what this codes are and where to type them to try? :)
You say they are ONLY for photos that are taken with good light conditions? Is the crappy colors corrected?
A590IS user


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Re: Problems with color when importing a .dng into photoshop cs3
« Reply #68 on: 29 / March / 2009, 11:09:44 »
if you have saved dngs you can use dngsetmatrix to change the matrix. I went and ran it against all of my old files. Though unfortunately if you use lightroom, rereading the metadata will reset all processing you have done. Just a warning. I was ok with it as I've been getting a LOT better with post processing and decided to go ahead and just reprocess all my favorites. You can search forums for dngsetmatrix...or google for it. I'm lazy right now. Just run the following:

dngsetmatrix *.dng m 1.023507 -0.252814 -0.165548 -0.094643 0.686256 0.067178 0.024208 0.069771 0.176833

*note* You have to do this in the directory that the dngs you want to process are.

I was saying that you need good lighting to try to take pictures of test targets for calibration. The colors should be better. At least for my camera they are. :)

Re: Problems with color when importing a .dng into photoshop cs3
« Reply #69 on: 02 / May / 2009, 22:06:51 »
Are there any plans to once again update/refine the color matrix for the CHDK firmware? I recently bought the a590 with the intention of using CHDK to shoot directly to DNG but the resulting dng's are terrible, Red's look incredibly weird (saturated I think) and the noise is awful (even at ISO 80 noise is quite noticable compared to the JPGs). DNG4PS seems to be quite unstable on my mac and i was hoping to reduce my workflow to simply using Lightroom. I can see there's alot of work going into this and most of the talk on this thread is like another language to me!  :o   I may see if it's not too late for me to return the a590 and grab another powershot with more accurate CHDK produced DNGs?

 

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