• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

Monitor Testing

L

lifeguard1999

Platinum Member
I received an Engineering Sample LCD monitor in the mail (it pays to go to SIGGRAPH). I am used to testing CPUs and GPUs - I have my own benchmarks for such things already set up. However, I have no benchmarks for LCD monitors. How does one go about testing the latency and color of an LCD monitor? Right now my plans are to run side-by-side GPU benchmarks to see how my current monitors and this new one compare. Any ideas?
 
For colors you can get something to measure the DeltaE of colors (like LaCie calibration products). DeltaE<3 is favorable, <2 is good, <1 is excellent IIRC.
For response time, you can use this utility's tests:
http://www.benchmarkhq.ru/files/pixperan_english.zip

It usually makes motion blur show up like a sore thumb. I think ChuckHsiao on this forum had a test for 6-bit or 8-bit color panel also. But if the DeltaE is fine, then you're OK.
 
Originally posted by: xtknight
Can you disclose the details of this LCD or is that under wraps?
Click to expand...

Link

It is NEC's 21-inch SpectraView LCD2180QX LED. The resolution is 2048x1536 for the 21 inch screen. That is less than IBM's T221 (9 Mpixel - we have two) and Apple's 30" monster (we have two). However it beats my Sony PremierPro SDM-P234 (1920x1200 - we have ten) for resolution, though not for size.

The LCD 2180UX (1600x1200) is available for $6,600.

Review of 2180UX.
 
Oh damn. I bet the colors look awesome. Does this have an LED for every pixel or just a big LED backlight? If the latter I don't see what warrants that kind of a price. Glad to see high resolutions on desktop LCD monitors finally.
 
This is the NEC monitor with the Luxeon LED backlight isn't it?

My understanding of how it works is there is a big strip of red, green and blue LEDs along one edge of the screen, with a complicated light deflector/mixer to divert the light evenly over the whole screen. The LCD panel, is a conventional panel (with red, green and blue coloured subpixels). (This is a typical LED module for LCD backlighting)

Because each colour of LEDs produces a narrow spectral band (unlike a white CCFL which produces a wide spiky spectrum) the combination of narrow band light and narrow band filters gives a much better colour filtering than if a CCFL was used.

It's surprisingly expensive - however, I suspect that's because it's meant to be a high-end product for professional use. This means that they will be very carefully checked and calibrated.
 
WTF is with that huge casing over the LCD seen on the first page?
Click to expand...

A common feature for high end monitors. It's to reduce glare and reflections so that you get maximum contrast. You can always take it off if you want - but if you're paying so much for accurate colours, you'll probably want to keep it.
 
It's not very scientific, but for a quick and dirty test of how a LCD handles moving images I'll use the Dragothic test from 3DMark2001. You can easily see the "ghosting" problem on the dragon's wings with a slow response time monitor.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top