Difference between 60hz and 120hz?

[Hynad]

slowmo said:

Hynad said:

slowmo said:
I think the difference of a 120Hz TV to the 60Hz TV's is more to do with the beefed up scaler they use in the TV's rather than any actual big wow factor from the frequency as most sources will never exceed 60Hz except for 3D content and PC's.

The main benefit I see with 120Hz sets is that unlike 60Hz sets, 120 is a multiple of 24. 

So the standard of 24 images per seconds from the movie industry fits confortably in there. Meaning that the TV doesn't need to do the 3:2 pull down to compensate. Which introduces judders especially noticeable during camera pans. 24 FPS actually fits 5 times in 120. So the TV plays each frames 5 times, making for a smoother experience than on 60Hz sets.

That's only Bluray sources really though, every other source would usually be 60hz.  I just don't see the point of creating extra virtual frames personally.  My projector supports 24-120 hz but that was bought for 3D mainly rather than any perception of smoother performance.

The tv creates virtual frames only when the interpolation option is on. Otherwise, the TV [wont' create frames, but] will play 5 times the same frames if it's a 120Hz set, or 10 times if it's 240Hz. Otherwise, it will use 3:2 pulldown and judder will be introduced. In fact, for as long as we've been using 60Hz TVs (since before anyone here was born, really), we've been used to the imperfect motion of 24 fps for movies. That's why when you watch a movie like The Hobbit at 48Hz, it looks quite weird.