Author Topic: Benchmark images different colors  (Read 146 times)

Offline astroman2

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Benchmark images different colors
« on: 2019 March 13 18:56:41 »
Hi Guys,

Just ran the standard benchmark on my laptop and my newer desktop.   I expected differences in the benchmark results, but I didn't expect the images to show very different saturation.  This makes me wonder if the new PI install on the desktop is performing different processing than the same update version on the laptop.  Refer JPGs attached for info.

Cheers
Scott

Offline astroman2

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Re: Benchmark images different colors
« Reply #1 on: 2019 March 13 18:59:15 »
adding laptop image

Offline sharkmelley

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Re: Benchmark images different colors
« Reply #2 on: 2019 March 14 03:01:59 »
The JPG from your laptop has been saved with an embedded ProPhoto RGB colour profile.
The JPG from your desktop has an embedded SRGB colour profile.

That's the main reason they display very differently.

Maybe you are using different colour management settings: laptop vs desktop

Mark
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H-alpha modified Sony A7S
http://www.markshelley.co.uk/Astronomy/

Offline astroman2

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Re: Benchmark images different colors
« Reply #3 on: 2019 March 14 05:03:20 »
Mark,

Thanks for your comment re colour space. This is definitely part of the explanation. If I change the colour space back to srgb on the laptop the pro photo image converts to appear roughly the same as the desktop (which is also srgb). But interestingly, the two pictures do not show the same histogram curves or statistics. It seems that the colour space is impacting how PI processes the images. I will play with this further and see if i can understand what is happening.