Re: LCD's and Room Illumination
Re: LCD's and Room Illumination
- Subject: Re: LCD's and Room Illumination
- From: Klaus Karcher <email@hidden>
- Date: Sat, 10 Nov 2007 09:35:51 +0100
Russell Proulx wrote:
Has anyone yet crafted a formula for determining the optimum room
illumination according to the brightness (white level) of an LCD?
The monitors would certainly be equipped with hoods and the ambient light
would be something like Philips D50's.
Thanks for any light you can shed on this :-)
The formula to translate luminance into illuminance is simple: Multiply
by pi (i.e. the perfect reflecting diffuser will match your monitor white).
To be able to evaluate reflective colors reliable, there must be a
minimum level of illuminance. If you have to compare softproofs and
prints, you should adjust your viewing booth to 500 lx (ISO 3664 P2:
practical print evaluation) and your display to 160 cd/m2. Of course you
have to take care that the level of stray light on your monitor is as
little as possible.
The relevant ISO standards are ISO 3664 (Viewing conditions) and ISO
12646 (Displays for colour proofing -- Characteristics and viewing
conditions).
Regards,
Klaus Karcher
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