On 2 Jan 2004 at 13:37, John Francis wrote:

> That sounds very much as though they were still using a monitor gamma
> response curve.  LCD displays have a very different gamma value.

Virtually no photo-apps (but some specific LCD cal products) have the complex S-
shaped curves required to pull LCD monitors into reasonable linearity. When 
calibrated the gammas are very similar, generically LCD doesn't not out perform 
CRT in this respect.

> Sshhh - don't tell the guys in the film industry.  Back when I was
> working for SGI the biggest customers for the LCD displays were from
> the folks working on special effects for films.  One of the major
> selling points of the LCD was the ability for it to be accurately
> (and repeatably) calibrated for colour reproduction.  Another was
> the contrast ratio, which far exceeeds what a conventional monitor
> can do.

This is assuming of course that you are comparing them next to a CRT with has a 
high reflectivity phosphor mask and isn't hooded (or otherwise protected from 
direct lighting). Using a CRT under ideal conditions can provide a 10x contrast 
advantage over LCDs.

The paper "LCDs Versus CRTs�Color-Calibration and Gamut Considerations" by 
GAURAV SHARMA, is a good read, it can be found on the web as:

lcdvscrtprocieee.pdf

Cheers,





Rob Studdert
HURSTVILLE AUSTRALIA
Tel +61-2-9554-4110
UTC(GMT)  +10 Hours
[EMAIL PROTECTED]
http://members.ozemail.com.au/~distudio/publications/
Pentax user since 1986, PDMLer since 1998


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