Is 120hz and MotionFlow the same thing?

ghomner · Feb 27, 2009

With Sony TVs, what exactly is 120hz as opposed to MotionFlow?

Can I turn 120hz on/off like I can the MotionFlow?

Do the Sony TVs run at 60hz except when one turns on the MotionFlow setting (to make it run at 120hz)? Or do the TVs always refresh at 120hz and the MotionFlow is a different feature that is independent of 120hz refresh rate?

scubie02 · Feb 27, 2009

it's a different feature, the tv is still refreshing at 120hz even if you turn Motionflow off. It's the same with other brands, they just call their Motionflow by different names.

whitetrash66 · Feb 27, 2009

Quote:
Originally Posted by ghomner /forum/post/15927048

With Sony TVs, what exactly is 120hz as opposed to MotionFlow?

Can I turn 120hz on/off like I can the MotionFlow?

Do the Sony TVs run at 60hz except when one turns on the MotionFlow setting (to make it run at 120hz)? Or do the TVs always refresh at 120hz and the MotionFlow is a different feature that is independent of 120hz refresh rate?

If you turn Cinemotion to auto 2, and motionflow on high, it will be smooth but not 3d looking. There is a lot of tweaking you can do since you have both cinemotion AND motionflow.

ghomner · Feb 27, 2009

Quote:
Originally Posted by scubie02 /forum/post/15927241

it's a different feature, the tv is still refreshing at 120hz even if you turn Motionflow off. It's the same with other brands, they just call their Motionflow by different names.

So 120hz TVs refresh the screen at 120 times a second (like how I could set my CRT computer monitor to refresh at 120hz)? All other TVs will refresh at 60hz--this is "built-in" to the TV and not like a setting right?

PIntag · Feb 27, 2009

120Hz TVs redraw the screen 120 times per second as you stated. However, broadcast TV displays its frames 30 times per second. As you can see, a 120Hz TV will redraw each frame 4 times since it is has to draw something at every screen refresh.

As I understand it, with these technologies like AMP and MotionFlow, TV manufacturers are actually "creating" new frames and displaying these instead of drawing the same frame 4 times. It's looking at the current frame and the one after it and creating (presumably) 3 frames which "fill in" the motion between them. The effect is a smoother (but not necessarily more realistic) picture.

As for Blue Ray sources, these are typically 24 frames per second. 120Hz TVs actually redraw each frame 5 times (24 x 5 = 120). This is where 120Hz TVs have an advantage over 60Hz ones; Since 60 is not a multiple of 24, 60Hz TVs are not able to draw each frame the same number of times. Some say that this results in a noticeable "judder", but it doesn't bother me.

Please someone correct me if this information is inaccurate.

ghomner · Feb 28, 2009

24 frames is only for Film though right? Does Hollywood still use film the majority of the time? Isn't it more expensive than video?

Does High-Definition have to be in video? Film can yield High-Definition material right?

V42 · Feb 28, 2009

Quote:
Originally Posted by ghomner /forum/post/15934712

Does High-Definition have to be in video? Film can yield High-Definition material right?

I'm sorry, but don't they teach physics in high school any more?

Film is a analog recording media. It's not limited to a discreet number of physical pixels like a CCD or CMOS detector is in a video camera. The only limitation is the grain structure of the film. 35mm film can record the equivent of a few 10's of megapixels worth of information (a somewhat subjective value), so it can easily be transfered to 1080p digital which only contains a little more than 2 megapixels. Now the differences in the visual qualities between film and digital recording is a whole other discussion for a different thread.

Jeffs386 · Feb 28, 2009

yea what he said!

Is 120hz and MotionFlow the same thing?

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