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Author Topic: Need help with Color Checker Passport DNG profiles for Panasonic Lumix LX7  (Read 590 times)
Goldilocks
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« on: January 15, 2013, 05:40:44 PM »
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I recently tried creating a dng profiles for my camera. I am having trouble making a profile for my Panasonic Lumix LX7. I am using Lightroom 3.5 and Color checker Passport 1.0.2. I successfully created a profile for my nikon d5000. For the Lumix, the pictures are coming out with too much Magenta. I made profiles using a cloudy day and profile using 5100k bulbs. Still too much magenta. Any suggestions?
Also, I'm metering on the 3rd darkest grey square and then bracketing. When I look at the files RGB values, a darker exposure gives me a value closer to the value of the 3rd darkest square. How do I determine the correct exposure?
Thanks for taking the time to read and answer.
Linda
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Vladimirovich
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« Reply #1 on: January 15, 2013, 06:31:50 PM »
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Also, I'm metering on the 3rd darkest grey square and then bracketing. When I look at the files RGB values, a darker exposure gives me a value closer to the value of the 3rd darkest square. How do I determine the correct exposure?


Eric Chan quite recently suggested (wrong word, as he is the developer or one of them it is not a suggestion, but rather an instruction) that the right exposure is the "brightest" one that Adobe DNG PE will still accept w/o error message... It has some internal checks implemented... so just make several shots gradually approaching clipping in 1/3 EV increments and the most ETTR'd one that PE still accepts is the right one... brute force... if you are using the software from XRite then I do not know the answer, but I 'd suggest to try Adobe PE first and then try the shot that was the best for Adobe PE for XRite profile creator.
« Last Edit: January 15, 2013, 06:40:52 PM by Vladimirovich » Logged
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