Alright, Linus Tech Tips covered that light guns don't work with (most?) LCDs because of input lag, and hence didn't include it with his MAME Arcade box, but could he replace it with a modern super low latency LCD?
but looking at this slow motion shot, it seems that not all lcd monitors do a frame-at-once,*1 and based on display lag observations, a 9ms lag LCD with 1ms response time would be comparable to "Using this [displaylag.com] metric, even a CRT would not have zero lag – it would have 8.3 ms of lag. This is because it takes a full 16.66 ms to display the entire frame from top to bottom."*2 and using this test https://youtu.be/Q3gaic8-Gf8 with the ViewSonic XG2401, the top of the screen is at 2.9ms, but bottom of the screen draws at 17.6ms, leaving only a Delta of 2.9ms at the top and 1ms at the top of the LCD compared to a perfect crt. So are light guns are really that sensitive to timing? Is there another problem that LCDs cause not related to input latency?
*1: https://youtu.be/wts8f1bNnbo
*2: http://www.meleeitonme.com/this-tv-lags-a-guide-on-input-and-display-lag/
I think to know for sure though, someone needs to have one of these monitors and actually test it out, and with all the monitors Linus must've collected, there's no other person better than him to test it.
Here are 2 tests that need to be done.
1. Use an IPS 9ms lag and a 5ms response time, like the ViewSonic VP2468
2. Use a TN panel with a 10ms lag and 1ms response time, like the ViewSonic XG2401
Will one of them work, will both of them work, or none of them? LTT, I hope you really consider this for a proper video.
