If you're wondering why most light gun games in the arcade or at home still 'flash' it's to increase the brightness to ensure the gun more reliably sees it's position since it can get 'lost' in darker spaces even though it's tracking at all times.Įxamples of Cathode Ray Timing guns would include the Namco Guncon 1 and Guncon 2. There is literally no way to build an LCD that would allow for a Cathode Ray Timing gun to work. This actually allows the Cathode Ray Timing guns to do real time tracking, much like a mouse. In this case the light gun has access to the sync signal of the display, allowing it to know when the CRT's electron gun will start scanning across the screen, it then knows when the electron gun shines down the barrel of the light gun as it scans, it simply does the math to compare when the scan started and when the light gun saw the beam and it can derive X and Y from that. However most light guns since then use a more advanced method called 'Cathode Ray Timing'.

The Zapper uses simple flashing squares on screen and a photo diode. Most light guns don't work the way the Nintendo Zapper does. 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.

Use a TN panel with a 10ms lag and 1ms response time, like the ViewSonic XG2401 Use an IPS 9ms lag and a 5ms response time, like the ViewSonic VP2468Ģ. 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.ġ. So are light guns are really that sensitive to timing? Is there another problem that LCDs cause not related to input latency? This is because it takes a full 16.66 ms to display the entire frame from top to bottom.'*2 and using this test 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. 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?īut 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 metric, even a CRT would not have zero lag – it would have 8.3 ms of lag.

Ems topgun 3 vs aimtrak vs arcade guns