Perhaps because the contrast numbers used in Television sales are total BS.
The real contrast ratios on most of these TVs' hover around 700 to 1300. The idea that they are cranking out 20 or 30 thousand to one with CCFL backlights is sheer marketing lunacy.
Workstation displays are meant for high color accuraacy. Color accuracy and uniformity are paramount, not contrast ratios.
These types of displays come from companies most people have never heard of, like EIZO, not Dell, HP, and Samsung.
But then I'm just an engineer, what do I know.http://www.eizo.com/products/lcd/SX3031W/index.asp
• 2560 × 1600 native resolution
• 900:1 contrast ratio
• 260 cd/m2 brightness
• 178° viewing angles
Wide Color Gamut
The FlexScan SX3031W has a color gamut that is 100% compared to NTSC. It also reproduces 97% of the Adobe RGB color space so it can display most colors in a photograph taken in Adobe RGB mode. Furthermore, it has an sRGB mode to accurately reproduce this narrower but commonly used color space. This ensures that colors meant for sRGB such as those used on web pages and any photos taken with a digital camera’s sRGB mode will be reproduced on the screen as intended.
12-Bit Gamma, 16-Bit Internal Processing
The FlexScan SX3031W comes quipped with EIZO’s latest integrated circuit which has a 12-bit look-up table with a color palette of 68 billion colors from which the most appropriate 16.7 million (8-bits) are displayed. It also features 16-bit internal processing for smooth display of grayscale tones, especially in dark areas of an image which typically are difficult for LCD monitors to display without banding.
Brightness and Color Uniformity with DUE
Uniformity errors usually seen as brighter or darker areas on the screen are characteristic of LCD panels. A Digital Uniformity Equalizer (DUE) function corrects brightness and chroma uniformity errors so they are virtually unnoticeable.
Brightness Stabilization Function
Ensures stable brightness - necessary for the proper display of color – with EIZO patented technology. A drift correction sensor quickly stabilizes the brightness level after startup or coming out of power saving mode. Furthermore, the monitor detects and automatically compensates for brightness changes caused by surrounding temperatures and the passage of time.