The Acer S276 has a maximum contrast ratio of 100000000:1. That's over five times the contrast ratio of the most frequently found dynamic contrast ratio of 20000000:1.
A 100000000:1 dynamic contrast ratio is in fact the best contrast ratio across all LCD screens of a comparable spec and age to the S276.
A Mega Contrast dynamic contrast ratio is the worst contrast ratio amongst similar types of flatpanel monitor.
We think you might also be interested in some of the other PC screens that have a 100000000:1 dynamic contrast ratio currently available including because of it's better review score, the H276HL ($199.99), or the 276HUL both from Acer or the Asus VW24.