Here is how to do a lag test using a camera with a fast shutter speed.
Step 1: 180° shutter, every field is exposed fully.
For content shot at 24p you set the shutter speed to 1/48th of a second.
For content shot at 30p you set the cameras shutter speed to 1/60th of a second.
For content shot at 48p you set the shutter speed to 1/96th of a second.
For content shot at 60p you would set the shutter speed to 1/120th of a second.
For content shot at 60i you would set the cameras shutter speed to 1/60th of a second.
Setting the shutter speed to match the speed of the content frame rate is important to do the test properly. In this case the refresh rate rather than the content.
Step 2: How many shots to take.
Take 5 shots at the shutter speed of the test pattern then compare all five shots to see if there is ghosting. It’s not just one shot. If you take at least five shots then one of them should be in focus and the others out of focus if there’s a ghosting problem. This advice may work better with some test patterns than others.
Stpe 3: Setting the camera.
In the camera settings a second is differentiated from a 30 seconds and 1/30 of a second by this symbol [b]”[/b]. 30″ means 30 seconds, and 30 means 1/30 of a second.
– Plasma only needs one monitor for this test.
[url=http://www.flatpanelshd.com/focus.php?subaction=showfull&id=1229335064]http://www.flatpanelshd.com/focus.php?subaction=showfull&id=1229335064[/url]
.
