On 26/02/2010 7:41 PM, N_Cook wrote:
Sylvia wrote in message
...
On 26/02/2010 9:51 AM, Chris wrote:
I am considering the purchase of an LED television. However, before I
do, I would like to know what the difference is between 120& 240hz;
other than the numbers. I've done some research, but there seems to be a
wide array of conflicting opinions. I know that it has to do with
refresh rate, jitter, and blur. So, if anyone has some straightforward
input on the matter, I'm all (grateful) ears.

Thanks

An alien with 240Hz eyes might appreciate[*] the higher frequency
version, but unless you're such an alien living on Earth incognito,
don't waste your money.

Sylvia.

[*] Ignoring the fact that colour displays are finely tuned to the way
that human colour vision works, and an alien would likely wonder what
we'd been smoking.


Ah that explains why I cannot watch these things for more than a few
minutes, I'm an alien. Would anyone know what the equivalent refresh rate is
for good old CRT technology ? As far as fast movement across the image is
concerned, motion jitter or judder or whatever the term is. What refresh
rate would have to be there before I cannot tell the difference between that
part of the technologies?





CRT TVs refresh at 50Hz or 60Hz (near enough) depending on region.

Since a TV program will only contain images (interlaced) at that rate -
or frequently less - a TV that purports to offer a higher refresh rate
will have to create the extra images by some kind of interpolation. If
it does a bad job, then the result will be unwatchable regardless of how
high the refresh rate is.

Sylvia.