The UltraSharp 24 has a maximum contrast ratio of 2000000:1. That's 60% less contrast ratio than a 5000000:1 flatpanel monitor, which is the most frequently found contrast ratio. The contrast ratio of all medium monitors that have been on the market for a similar time to the UltraSharp 24 ranges from Mega Contrast to 100000000:1.
We think you might also be interested in some of the alternative LCD screens that have a 2000000:1 dynamic contrast ratio currently available including because of it's better review score, the DELL U2414H (£139.00).
If you are looking for an LCD screen with a higher contrast ratio then you might want to consider the DELL UZ2315H (£187.25) (8000000:1) which also has a higher Rating.