Question How can I measure Input Lag?

[Mockingjason]

I have a CFG73 24' Samsung Monitor. How can I measure its Input Lag, and how much input lag(ms) does FreeSync add? (I have an nvidia gpu, on the monitor's settings I enabled freesync, but on the nvidia control panel i used set up gsync)

 

[Newtonius]

You can try this home made method:

Best way to measure input lag

So what's the best way to measure input lag when you want to a) measure the input lag of a controller and b) measure the inplut lag of two displays in comparison.

www.neogaf.com

But the best way to do it is to use a special device or high-speed cameras to record your hand and monitor.