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'[EE] And where do you attach the car battery? DLP '
2007\03\29@014843 by Robert Rolf

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michael brown wrote:

{Quote hidden}

How can you NOT see the 'rainbows'?
DLPs use frame sequential scanning. Red, Green, Blue.
If you move your eyes you see the individual colors
at high contrast (black-white) boundaries. Annoying as heck.
And if it's an action movie, you're moving your eyes.
Wish I'd known that before I bought mine (but the contrast and lumens specs
were WAY better than a comparably priced LCD).

R




2007\03\29@074101 by Michael Rigby-Jones

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>-----Original Message-----
>From: spam_OUTpiclist-bouncesTakeThisOuTspammit.edu [.....piclist-bouncesKILLspamspam@spam@mit.edu]
>On Behalf Of Robert Rolf
>Sent: 29 March 2007 06:49
>To: Microcontroller discussion list - Public.
>Subject: Re: [EE] And where do you attach the car battery? DLP
>rainbows.
>
>
How can you NOT see the 'rainbows'?
DLPs use frame sequential scanning. Red, Green, Blue.
If you move your eyes you see the individual colors
at high contrast (black-white) boundaries. Annoying as heck. And if it's an action movie, you're moving your eyes. Wish I'd known that before I bought mine (but the contrast and lumens specs were WAY better than a comparably priced LCD).

The majority of people simply don't see them.  The newer projectors that have more segments in the colour wheel and higher colour wheel speeds are way better than the older ones in this respect.

Regards

Mike

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2007\03\29@132103 by Herbert Graf

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On Wed, 2007-03-28 at 23:48 -0600, Robert Rolf wrote:
> How can you NOT see the 'rainbows'?

Same reason 60Hz refresh rates on a computer monitor bug some people,
but not others.

It all depends on the viewer. I've never seen a front projection DLP
picture, so I can't say whether it bothers me or not. That said, I find
60Hz on a computer monitor VERY annoying, and the 24fps rate in movie
theatres (doubled to 48fps by showing each image twice) almost painful,
but that's me. Other people I work with have their CRTs running at 60Hz
and don't even notice, and obviously the masses don't find the 24fps in
the movie theatres, otherwise they wouldn't keep going.

TTYL

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