Question about Hz

[Slate99]

Been looking at telly and am a little confused by the hertz.

I was under the impression that Hz in tellys refers to fps? Most 1080p tv's are either 50 or 100 Hz. Sony now have the new z-series which is 200 Hz.

This seems like a pointless excercise as the eye sees it as movment at about 35 fps (what I think is 35hz) if this is the case then what's the point In 200 hz when 50 hz is enough. Surely there is no difference as they are all over our eyes maximum?

Or am I completly wrong?

[Slate99]

Thanks for the interesting replies and it seems that it is left over from the CRT days. The thing I that manufactures seem to making a big deal (read as big price increase) for a telly with 100 or 200 hz.

As said if the footage is at 60hz the Tv creates artifical frames to create smoothness. The thing is I don't notice that 50 or 60 hz isn't smooth. Can we really notice smoothness on a day to day basis. I do take on board about a car chase or pehaps a game of tennis but even then I don't think "damn this 60 hz telly it's messing up my viewing"

linking it back to tv's a 100 hz 1080p is just fine then!

[Slate99]

RizzoTheRat said:

Slate99 said:

linking it back to tv's a 100 hz 1080p is just fine then!

Unless it's very big or you're sat very close to it you're not going to see a difference between a 720p and 1080p either.

Ohh really - I was thinking that's where the main difference was, I won't be using it as a Monitor, it's for Sky HD and Gaming. I was under the impression that you could notice the differnece between 720 and 1080 - I'm looking to get a 37" or 42" sitting about 8 feet away.

ETA - Thanks for that chart - Its really helpful!

Edited by Slate99 on Monday 5th October 09:10

[Slate99]

From that chart it appears that 720p is fine - I fall right into the "Benifits of 720p" area - that will save be a few quid if that graph is anything to go buy.