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Re: Colorsync-users Digest, Vol 1, Issue 100
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Re: Colorsync-users Digest, Vol 1, Issue 100


  • Subject: Re: Colorsync-users Digest, Vol 1, Issue 100
  • From: Karl Koch <email@hidden>
  • Date: Thu, 25 Nov 2004 21:17:28 +0100

Hi Roger,

L* is a visually linear luminance response curve, as opposed to (any) gamma. If you calibrate your monitor to a gamma function, you compress RGB values on one end and expand them in another area. This can result in banding, if you work in an 8-bit environment. L* calibration will avoid these effects and will also be beneficial for hardware (10-bit LUT) calibratable monitors like EIZO or NEC-Mitsubishi.
An L* calibration will best be accompanied by an L* working space. You can download LStar-RGB from www.lstarrgb.com. It has the gamut of eciRGB and an L* response curve.


Best regards,

Karl Koch

Am 25.11.2004 um 02:10 schrieb email@hidden:

Message: 15
Date: Wed, 24 Nov 2004 19:13:19 -0500
From: Roger Breton <email@hidden>
Subject: Re: recommendations on monitor calibration
To: Jon Meyer <email@hidden>, Mark Buckner
	<email@hidden>
Cc: email@hidden, email@hidden
Message-ID: <BDCA8DCF.9D75%email@hidden>
Content-Type: text/plain; charset=US-ASCII

Starting with a launch at the GATF color conference in less than two
weeks, basICColor products, including L* display will have a strong
US presence. While the engines under the hood are similar, basICColor
has some major monitor manufacturer endorsements.

Further info will be available in 2 weeks.

- Jon

Can you give some details on the L* calibration? I understand it's an alternative to gamma calibration.

Regards,

Roger Breton  |  Laval, Canada  |  email@hidden
http://pages.infinit.net/graxx

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