A Solid lad wrote:
I know the difference between the two, I just don't know what LG is claiming here.
You're saying it's probably persistence?
Yes, probably.
Persistence (MPRT) is also a different kind of response time, as M.P.R.T. stands for Moving Picture
Response Time
So "1ms response" may actually mean "1ms persistence"("1ms MPRT") or it could mean "1ms GtG".
Annoyingly, two different legitimate measurement methods.
Some facts:
-- MPRT and GtG are two different legitimate response-time measurements under extremely different measurement criteria.
-- When GtG is below a refresh cycle, it stops improving motion blur very noticeably. Modern GtG (1ms, 2ms, 4ms) often have little differences in motion blur.
-- MPRT is proportionally equal to motion blur thickness for a specific motion speed.
-- MPRT is strobe length on strobed displays.
-- MPRT and persistence means the same thing, terminology-wise, when it comes to a number: as a time-based measurement.
-- MPRT is always at least a refresh cycle long on sample-and-hold (non-strobed)
-- MPRT is typically higher than GtG on sample-and-hold (non-strobed)
-- MPRT always changes everytime you turn on/off strobing.
-- MPRT can be sometimes be much lower than GtG during strobed modes
-- GtG typically stays the same regardless of mode (though overdrive setting will affect this).
-- GtG is unseen by eyes in the black periods of strobing (LCD pixels transitioning in darkness between strobe flashes).
So based this logic, my assumption is LG is using GtG rating during nonstrobed (because it's less than a refresh cycle), and MPRT rating during strobed (which makes full sense).
I agree, I wish manufacturers would be more specific which response rating they use. GtG and MPRT(persistence) are two separate numeric response measurements. One is pixel visibility time, the other is pixel transition time.
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