Re: LCD brightness settings
Re: LCD brightness settings
- Subject: Re: LCD brightness settings
- From: Roger Breton <email@hidden>
- Date: Sun, 09 Jan 2005 17:10:36 -0500
> I have just purchased an NEC/Mits SpectraView LCD2180UX.
>
< snip>
> As there are no hardware controls as such on an LCD I thought the OSD
> brightness control was 'the' backlight control?
Seems logical to me as I'm not aware of a separate 'backlit' control in
iMatch v3.
> Using the Spectraview software it can take advantage of using digital
> display controls to automatically optimize the monitors brightness,
> contrast and RGB settings prior to calibration - a choice I have been
> testing. I can see after calibration although the monitors OSD
> brightness reading is still sat at 100% the screen brightness value has
> obviously lowered after calibration - 85 cd/m2 input.
So you coul conclude that SpectraView is not updating the stated screen
brightness with the 'adjusted' value. An unfortunate shortcoming if that is
the case.
> Are both Eye One match and Spectraview, with its auto digital
> optimization facility, calibrating the LCD in a similar fashion behind
> the scenes
I'm not familiar enough with the LCD version of SpectraView to compare with
the way iMatch does it.
> or would one route be better than another in terms of
> accuracy, purely in relation to the contrast and brightness settings?
"Purely" is a big word because brightness is taken away of the profiling
loop once the calibration and profiling are done. If you get the 85 cd/m2
you want once either SpectraView or iMatch is done with your display, then
the exact brightness setting used is secondary. But I see your point. In
keeping with the way it's done on a CRT, where one gets to adjust the
brightness in hardware, say at a certain value on a scale from 0% to 100%,
it's only fair that the manufactuter respect this tradition of accurate
reporting. I'd file this as a bug to Mitsubishi.
> At present I am getting very good colour accuracy and virtually no
> banding but the Spectraview monitors tonal range is somewhat flatter
> than my CRT.
Black point is too high?
> I had thought the LCD contrast might have been still a tad
> higher after calibration and would be fighting to pull the contrast
> levels down. I am aware that an LCD has black point problems and will
> not match a CRT. I would say from testing an Eizo CG 21 a few months
> ago the Spectraview 2180 provides similar results.
>
> Regards
>
> Nick Walker
Regards,
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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