Take the 2-minute tour ×
Ask Different is a question and answer site for power users of Apple hardware and software. It's 100% free, no registration required.

Are there any hand held devices, PDA , phones or pads that have a screen refresh rate of 120Hz.

share|improve this question

closed as off topic by Kyle Cronin Nov 10 '11 at 22:21

Questions on Ask Different are expected to relate to Apple hardware or software within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Possible duplicate apple.stackexchange.com/questions/8006/… –  jmlumpkin Apr 9 '11 at 22:15
    
Just wondering... Why would you want that? –  Cawas Apr 15 '11 at 22:30
    
@Cawas - The only thing I can think of is mobile active-shutter 3d stuff... –  Fake Name Jul 5 '11 at 8:20

2 Answers 2

Since you are dealing with devices that have LCD screens (and not CRTs), it ultimately doesn't matter what the refresh rate is -- what matters most is how quickly a pixel can change from one color to another, and this isn't constant across the color range the device can display.

It is important how certain videos are processed since 24p can't fit into 60 equally (hence the supposed value of 120hz), but you'll find conflicting views as to if it is all that noticeable, useful, and/or even desirable. Let's just say this: I've never had a problem watching a video on my iPhone or iPad and noticing bad motion blur or odd artifacts.

share|improve this answer

120 Hz is exactly 2x refresh rate for room lighting in the USA. You sure you won't set up unwanted interference? It may be subtle, but it might become tiring.

I'm not sure refresh rate is that important with modern non-CRT displays. The difference between min and max lumens is significantly lower these days than with the old technology, isn't it?

share|improve this answer
    
Odds are the OP wants that sync with US power in order to videotape them without having scan lines show. Since these aren't CRTs, though, it shouldn't be a problem. I know that I've videorecorded iPhone and iPad screens with no problems whatsoever. –  Matthew Frederick Apr 10 '11 at 18:13