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Author Topic: What do you use to make camera profiles?  (Read 10674 times)

digitaldog

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Re: What do you use to make camera profiles?
« Reply #20 on: February 21, 2025, 05:46:09 pm »

Quote
“Science is not just about seeing, it’s about measuring, preferably with something that’s not your own eyes, which are inextricably conjoined with the baggage of your brain. That baggage is more often than not a satchel of preconceived ideas, post-conceived notions, and outright bias”.
Neil deGrasse Tyson
There IS a science of color (colorimetry, color science). Assuming your camera is 'accurate' falls outside science. This is telling in more than one way:
"Human psychology has a near-universal tendency to let belief be colored by desire".
— Richard Dawkins
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BobShaw

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Re: What do you use to make camera profiles?
« Reply #21 on: February 21, 2025, 08:28:35 pm »

Your belief is not evidence!
Color Accuracy is not ambiguous, the results are based on measurements and analysis whereby the accuracy of two colors, the color photographed at the scene, and some resulting digital color number, output somewhere, are compared.  Then an accuracy metric (deltaE) can be provided. Stating the accuracy between two solid colors is a dE 2000 of 4 is just as precise as saying my backyard wall when measured, is 6 feet tall. Accurate color requires measurements and analysis and a numeric report of the accuracy.

"I often say that when you can measure what you are speaking about, and express it in numbers,
you know something about it;but when you cannot measure it, when you cannot express
it in numbers, your knowledge is of a meagre and unsatisfactory kind."-Lord Kelvin
You really need to go out more. You are making consecutive posts. If you watched the video then delta values are shown, but 99.9% of real world photographers don't really care.
« Last Edit: February 21, 2025, 08:42:07 pm by BobShaw »
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digitaldog

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Re: What do you use to make camera profiles?
« Reply #22 on: February 21, 2025, 08:41:31 pm »

You really need to go out more. If you watched the video then delta values are shown, but 99.9% of photographer don't really care.
No, there is one number for one patch; that isn't a dE report and tells us nothing about what you assume is color accuracy.
2nd, you really can't and should not speak for 99.9% of photographers; just speak for yourself (in this thread, where someone is asking about profiles, you suggest a camera system, then boast about "color accuracy" without data). “The right to be heard does not include the right to be taken seriously”. Anonymous
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BobShaw

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Re: What do you use to make camera profiles?
« Reply #23 on: February 21, 2025, 09:01:33 pm »

without data).
No I didn't write down values but I did watch Les Walkling do Dual Illuminant DNG on every camera in a class of about 20 people and even the same model of cameras are all over the place, because they are not calibrated. Hasselblad cameras are calibrated at the factory. The Op can decide if that interests him.
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digitaldog

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Re: What do you use to make camera profiles?
« Reply #24 on: February 21, 2025, 10:18:09 pm »

No I didn't write down values but I did watch Les Walkling do Dual Illuminant DNG on every camera in a class of about 20 people and even the same model of cameras are all over the place, because they are not calibrated. Hasselblad cameras are calibrated at the factory. The Op can decide if that interests him.
As you missed earlier, DNG profiles, dual or otherwise, are output referred and thus have nothing to do with accurate color. You must also study the vast but essential difference between calibration and profiling. The OP can follow the recommendations from the color professionals, too…
Rule on holes; when you are deep in one, stop digging.
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digitaldog

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Re: What do you use to make camera profiles?
« Reply #25 on: February 22, 2025, 12:07:00 pm »

For those with open minds about what a color accuracy report looks like:
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BobShaw

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Re: What do you use to make camera profiles?
« Reply #26 on: February 22, 2025, 06:06:47 pm »

For those with open minds about what a color accuracy report looks like:
Open mind! on this forum? Personally I sell photos not reports.
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digitaldog

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Re: What do you use to make camera profiles?
« Reply #27 on: February 22, 2025, 06:10:28 pm »

Open mind! on this forum? Personally I sell photos not reports.
I can sell both.
Keep digging.
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Lessbones

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Re: What do you use to make camera profiles?
« Reply #28 on: February 22, 2025, 06:19:42 pm »

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