English NTSC TV's.

[dtvmcdonald]

The 50Hz I have seen has all been in 50Hz South American countries, Malaysia,
and England.

I was in Malaysia at the height of the CRT to flat screen "always on"
transition and the flicker difference between
CRT and LCD was amazing. In the US one could see flicker (at 60 HZ)
on CRTs only on the brightest computer monitors with a full-white
screen. It seemed to go away about 72 or 75 Hz

Of course, given the terrible 50HZ flicker problem, perhaps
European producers avoided white screens even more
than ours did (because of blooming in tube sets
on white screens).

I never noticed a resolution difference between 525 and 625 lines,
vertical resolution. But I never compared side to side.

[wa2ise]

Originally Posted by dtvmcdonald

The 50Hz I have seen has all been in 50Hz South American countries, Malaysia,
and England.
...

Back in the 80's there was talk of using frame stores to store the image and play it twice, to get the refresh rate to 100Hz. This was when CRTs were the only game in town.

[ppppenguin]

Originally Posted by wa2ise

Back in the 80's there was talk of using frame stores to store the image and play it twice, to get the refresh rate to 100Hz. This was when CRTs were the only game in town.

I first saw this in a lab in the mid 1980s, before commercially available 100Hz sets. At first I could hardly see flicker even at 50Hz but after a while I became attuned to it. Watching 100Hz pictures felt very relaxed compared to 50Hz.

LCD sets inherently don't flicker, regardless of frame rate. The LCD cells have a zero order hold function by their nature. Motion portrayal is a different problem. LCDs have a laggy response, almost inevitably worse than CRTs, despite the whole arsenal of tricks employed by panel and set makers.