questionscan you see a difference between a 120 and 240…

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No, it realistically doesn't make any difference.

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@jsoko: Thank you for your answer. Then why do people pay more for a higher refresh rate?

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@cengland0: Because people think bigger number is better... But like you said on a shutter glasses, it's completely different, and you need a higher refresh rate.

FYI. Wikipedia says "movies are usually filmed at a rate of 24 frames per second."

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@jsoko: Movies at the theater are at 24 fps. This is film. Then, they upconvert that to 29.97 for NTSC and DVDs. Not sure if it's any different for Bluray or not.

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No, there isn't a large discernible difference between 120Hz & 240Hz for Non-3D TVs. For 3DTVs, there will be a difference as I'm about to explain for non-3D 60Hz vs. 120Hz.

Traditional TVs were 60Hz, which worked fine since most television programming was at a 30Hz refresh rate; thus, your TV just showed the same image for double the amount of time. When Blu-Ray came in, it's at 24 fps (24Hz), which isn't an even divider into 60. That can cause some blurring effects and not look as good since the TV is splitting frames on refresh rates. What made 120Hz so great was it was an even divider to both, so the images show a lot clearer. Now for 3D, you want 240Hz so that each eye is equivalently receiving 120Hz signal (obviously doesn't matter if you're watching non-3D shows on the 3D tv).

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@soccerkrzy: Excellent explanation. Thank you very much.