Quote:I never said that.
Pursuit camera tests are an additional optional tool for MPRT measurements.
They just simply give photographed proof of the motion blur, and makes it possible to measure MPRT (or "lines of motion resolution") from the photographs.
Read my above new post.
You can skip the pursuit camera, and even use MPRT with existing "lines of motion resolution" patterns (as limited as they may be).
MPRT just makes it easy to analyze the photos, knowing that mathematically, 1ms MPRT = 1 pixel of motion blur during 1000 pixels/sec. For my pursuit camera Sync Track invention, the tick marks in the Sync Track is a convenient pixel ruler too to calibrate scientific motion blur measurements (as they're a known pixel separation value). It's not the only way to skin a cat -- there are numerous ways to analyze MPRT not even written about in this thread (as this carefully-worded google search reveals).
Note: Sure, ghosting/decay effects do complicates things a bit in giving a number to motion blur. So we choose a standardized rise/fall cutoff, science observations is suggesting 50%. Otherwise we come to situations where a certain CRT with a certain phosphor may be creating a motion blur that shows up as 1.2ms MPRT under a certain measurement cutoff standard, but 1.6ms MPRT under a different measurement cutoff. (the non-linear phosphor decay curve -- do we cutoff at 50%? cutoff at 90%?) In an attempt to get the objective measurements to more closely agree with subjective observations. (now that display motion blur is now cheaply accurately photographically capturable using the method I invented) Even these numbers, 1.2ms MPRT and 1.6ms MPRT is like splitting hairs (nitpicking, essentially), when we're comparing a 1ms strobe backlight to a 5ms plasma phosphor, to a 16ms MPRT sample-and-hold 60Hz LCD. I point out contrast ratios are also complicated too. Display non-uniformity. Backlight bleed. Ambient light. Dynamic contrast ratios. Static contrast ratios. Different size of contrast ratio checkeboard (ANSI vs non-ANSI). Halo effects in local dimming. Plasma voltage sag (dimming of excessive bright image) affecting contrast. Etc. Etc. These variables changes the contrast ratio numbers.
Edited by Mark Rejhon - 10/4/13 at 9:01pm