Good points all but I still don't understand this "response time"
number. For example, this Samsung 226BW claims a 2 ms response time.
<http://www.newegg.com/Product/Product.aspx?Item=N82E16824001096> What
does that mean?
Chuck Norcutt
Andrew Fildes wrote:
> Phosphor glows - the image decays away and is overwhelmed by the next
> frame/sweep.
> LCD's extinguish the frame before the next image.
> But the persistence of the human eye should be around 14fps, give or
> take.
> After that, the illusion of movement kicks in.
> How the hell are you guys coping in a non-didge cinema with a 24fps
> rate?
> There, half the time you're looking at a dark screen.
> That's a hellofalot slower than an LCD and has the same total
> extinguishment for longer periods.
> It would have to be impossible.
> So if cinema is acceptable, we must be looking at a different effect
> than simple 'persistence of vision'.
> Andrew Fildes
> afildes@xxxxxxxxxxxxx
>
>
>
> On 28/09/2007, at 4:21 AM, Chuck Norcutt wrote:
>
>> Hmmm. I find your answer unsatisfying. Although a CRT lights each
>> pixel with an electron beam sweeping across the phosphors the beam is
>> moving at an extremely fast rate. So fast that it hits every single
>> pixel once every 16.7 ms if the refresh rate is 60 Hz and faster than
>> that if the refresh rate is higher. Obviously, the phosphors have to
>> have a persistence at least as long as 16.7 ms else they'd go dark
>> before the beam came around again... that awful flicker.
>
>
>
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