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Old 30-11-2015, 12:14 PM
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Shiraz (Ray)
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Join Date: Apr 2010
Location: ardrossan south australia
Posts: 4,918
display technology - need help

Hi
a recent image elicited a couple of responses that low spatial frequency blue noise could be seen in the background. On my monitor it does not show to any noticeable degree. I trust the judgement of those who posted, so the question is, why the difference?

1. my monitor is an IPS with 6 bit hardware and dithering to 8 bits. It is claimed to display 72% NTSC, which presumably means full sRGB and it calibrates well against on-line test patterns.
2. my understanding is that my graphics card has 24bit display memory
3. my images to date are all RGB gamut.
4. my understanding is that most popular software and the internet is sRGB by default

questions:

1. could the display of limited RGB gamut images on a broad gamut monitor result in enhanced visibility of noise (one source suggested that such a mismatch could produce odd effects)? or
2. Is my monitor insufficient to show underlying noise and do I need something better (it looks pretty good on test patterns)?
3. would screen calibration hardware help much on a 6 bit dithered screen driven by 8 bit graphics technology?

be very grateful for any help. Thanks, Ray

Last edited by Shiraz; 30-11-2015 at 01:58 PM.
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