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Author Topic: Do some vendors give up colour separation for high ISO?  (Read 4987 times)

AlterEgo

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Re: Do some vendors give up colour separation for high ISO?
« Reply #20 on: March 03, 2016, 10:14:16 am »

and some lenses are

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ErikKaffehr

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Re: Do some vendors give up colour separation for high ISO?
« Reply #21 on: March 03, 2016, 10:30:30 am »

Hi Jack,

I just put my ColorMunki on some parts of the flower and than plotted the measured spectra in PatchTool. There were probably some parameters I forgot about like illuminant. I think I had a consistent set of data, but I don't have any notes about the details…

Best regards
Erik


Erik, that's interesting.  May I ask how you produced the 'correct' colors?

Jack
« Last Edit: March 03, 2016, 02:00:17 pm by ErikKaffehr »
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Jack Hogan

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Re: Do some vendors give up colour separation for high ISO?
« Reply #22 on: March 03, 2016, 01:51:19 pm »

and some lenses are

I still don't  think this is representative of current CFA sensors.
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AlterEgo

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Re: Do some vendors give up colour separation for high ISO?
« Reply #23 on: March 03, 2016, 02:56:23 pm »

I still don't  think this is representative of current CFA sensors.
why ?
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Jack Hogan

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Re: Do some vendors give up colour separation for high ISO?
« Reply #24 on: March 03, 2016, 02:58:01 pm »

why ?
Because it's the only one of many, many that looks like that.
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AlterEgo

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Re: Do some vendors give up colour separation for high ISO?
« Reply #25 on: March 03, 2016, 04:58:56 pm »

Because it's the only one of many, many that looks like that.
well, I read the description of how he was measuring - it sounds way better than 20 graphs from that web page of Jinwei Gu (who was not exactly measuring for the ultimate precision)...  but by all means you can engage him into a small talk  8)
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