The V276HLBID has a maximum contrast ratio of 100000000:1. That's over twenty times the contrast ratio of a 5000000:1 LCD screen, which is the most frequently found contrast ratio.
This PC screen's contrast ratio (100000000:1) is actually the best contrast ratio amongst all PC monitors of a similar age and type to the V276HLBID.
A Mega Contrast dynamic contrast ratio is the worst contrast ratio amongst similar types of PC screen.
Other LCD screens that have a 100000000:1 dynamic contrast ratio currently available that you might want to consider include the G277HL (£149.97), or the K242HQL (£121.89) both from Acer which has a better Rating; or the Acer 42HQL (£117.23) which is cheaper.