Accurate color, contrast and sharpness are critical in photo editing. There are three types of LCD technology.
TN (Twisted Nematic) – These are the lowest quality monitors for photo editing.These are not the best for photographers.
IPS (In-plane Viewing) – IPS monitors offer the widest color gamut and viewing angles, but lower contrast.
VA (Vertical Alignment) – VA monitors have the best contrast, but the response time and viewing angle are not as good as the IPS monitors. VA monitors can be MVA (Multidomain Vertical Alignment) or PVA (Patterned Vertical Alignment).
Photographers typically will use an IPS monitor. Professional LCD monitors are more expensive than standard monitors. The best LCD monitor for photo editing in the low budget range are smaller, 21 inches or smaller, but have uniform color and accuracy. VA monitors are a good choice for budget conscience photographers, but keep in mind the viewing angle is critical. Prices can range anywhere from $300 to $700, depending on the specifics.
Mid-range LCD monitors for photo editing are 24 inches or larger using IPS technology and have a good response time of 6 ms. Color reproduction and gamut are good and they are solid performers. These range in price from $500 to $1000.
Top of the line LCD monitors use IPS, have a large viewing screen, excellent color reproduction, stability, accuracy, consistency and color gradations. These are manufactured as professional LCD monitors for pre-press and photographic use. The cost can run from $1000 to $5000, or higher.