While the effect of gamma correction may be monitor-dependent, it is still properly captured in screenshots, and therefore screenshots can be used to determine whether or not there is a benefit for your monitor.Joe DeFuria said:You can't really see the true effect of the Camma correction unless you see it on your monitor "live".
Of course, like all aliasing, the lack of gamma correction (or improper gamma correction for a specific monitor) will be more obvious in motion. To counteract this, synthetic analysis is necessary for proper testing of whether or not the gamma correction is a true benefit for a particular person's setup.