Re: gamma bewilderment wrt/ Argyll’s documentation
Re: gamma bewilderment wrt/ Argyll’s documentation
- Subject: Re: gamma bewilderment wrt/ Argyll’s documentation
- From: Ben Goren <email@hidden>
- Date: Tue, 29 Mar 2016 12:07:30 -0700
On Mar 29, 2016, at 11:15 AM, Andrew Rodney <email@hidden> wrote:
> No visible banding on-screen here with a PA272W, high bit files.
Of course not. Because it has:
> 14-bit 3D internal programmable lookup tables (LUTs) for calibration
http://www.necdisplay.com/p/desktop-monitors/pa272w
But Dell has a $99 monitor which makes no mention of LUT size:
http://accessories.us.dell.com/sna/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=210-AGND
They claim a 600:1 contrast ratio, which is just over nine stops. (And 200 cd/m/m may be a bit bright for graphic arts work but would be reasonably common in an office.) It's not at all difficult to imagine easily visible posterization if it's an eight-bit data path throughout, which it presumably is.
Now, consider an eight-bit data path without any gamma encoding....
Cheers,
b&
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