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Author Topic: Luminance noise reduction in C1: increasing contrast?  (Read 1955 times)

bcf

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Luminance noise reduction in C1: increasing contrast?
« on: August 05, 2014, 06:53:14 PM »

The "Luminance" noise reduction slider is by default at 50, even for low ISO files. I noticed that, if I set it to 0, expecting the image to appear more sharpened, the image ended up less sharpened - or rather, upon further inspection, less contrasty (less local contrast).

Does C1 increase local contrast "under the hood" when the luminosity noise suppression is increased?

Anyway, I find that with luminosity noise reduction at 0 instead of 50, and the default sharpening settings, images look more natural: with luminosity noise reduction at 50, they are often exhibit too much local contrast to my taste.

Does anyone see the same thing (I use a D700)?
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Keith Reeder

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Keith Reeder
Blyth, NE England

bcf

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #2 on: August 18, 2014, 04:29:15 PM »

Not at all Keith... I was away from my keyboard for a few days, and today the Phase One site appears to be down.
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Jim MSP

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #3 on: August 20, 2014, 12:01:59 PM »

.....and today the Phase One site appears to be down.
And it is still down.
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BartvanderWolf

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #4 on: August 20, 2014, 12:48:16 PM »

And it is still down.

No problem reaching them from the Netherlands... Maybe an issue with your ISP?

Cheers,
Bart
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Jim MSP

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #5 on: August 20, 2014, 03:41:32 PM »

No problem reaching them from the Netherlands... Maybe an issue with your ISP?

Cheers,
Bart
Could be. Though I'm not quite sure how to approach fixing it. I have tried 3 different browsers, another reboot, clearing browser history, cookies & cache, and trying to enter from the Phase One site directly. Nothing seems to work. And I have had no other issues with any other sites.
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Jim MSP

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #6 on: August 20, 2014, 03:44:33 PM »

Could be. Though I'm not quite sure how to approach fixing it. I have tried 3 different browsers, another reboot, clearing browser history, cookies & cache, and trying to enter from the Phase One site directly. Nothing seems to work. And I have had no other issues with any other sites.
Now in. I erased the "/en" from the site, and in I went.
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bcf

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Re: Luminance noise reduction in C1: increasing contrast?
« Reply #7 on: August 23, 2014, 05:13:10 PM »

Yes, it works:
http://forum.phaseone.com/viewtopic.php?f=46&t=16739&p=79411&sid=d1be749f1e9a03e45baf93e949e3c2bf#p79411

I have added a little someting to the thread, but nobody seems much interested. No more input by Phase One people, too bad.
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