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About DLP Front projectors


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9 replies to this topic

#1 of 10 MarkusBen

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Posted May 08 2003 - 06:09 AM

Hello

I´m planning to buy a DLP front projector for DVDs, X-Box and PS2 but I am new in projectors and I have a couple questions for someone wise.

1. Can I have burn-ins if I play video games on DLP projector. How about LCD projectors? I have only found informations about burn-ins in RPTV and I don´t know if it´s same with front projectors.


2. I am sitting about 12 ft. from the screen. How large can the screen be so it´s comfortable to watch. I don´t want to look constantly from right to left to see what is going on on the screen. Posted Image

3. Does the room have to be totally dark to enjoy the picture. The projector is 600 lumens.



Thank you.

#2 of 10 Doug_H

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Posted May 08 2003 - 06:43 AM

I will take a crack at this but I am no expert.

DLP's do not have burn in issues, I am not sure about LCD's

The general rule of thumb is 1.5-2x the screen width but you might be able to go slight larger or smaller based on the quality of your projector, screen etc.

600 lumens is pretty low so you may find a need to keep the room dark. My current proj. is 500 lumens and I have to have absolute darkness but my unit is very old.

I am planning on ordering an Infocus X1 next month, they run about $1100 onlin and have 1000 lumens, 800 in film mode. I will have 12 feet to work with as well and am planning on an 85" diagonal 16x9 screen. That breaks the 2x rule but I can adjust if I need to.

I also expect to need it pretty dark to watch.
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#3 of 10 MarkusBen

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Posted May 08 2003 - 07:22 AM

Thank you for your reply. I was also looking at the Infocus X1. I noticed that you said your screen was 16:9. I thought X1 was only 4:3. I´m thinking about Sharp XV-Z91E but the X1 is a very sensible projector if it´s 16:9.

#4 of 10 MarkusBen

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Posted May 08 2003 - 07:30 AM

Well, it´s already sencible but if it´s 16:9 that´s even better. That´s what I´m trying to say.Posted Image

#5 of 10 Doug_H

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Posted May 08 2003 - 07:32 AM

The X1 is 4:3 however it has a 16:9 setting the blacks out the top and bottom so you can use it as a 16:9 projector. It doesn't "sqeeze" the image however so you don't gain picture quality like you can with some systems.

That is fine for me as I the picture I have seen is really impressive for the price... I think it is as good as my friends well calibrated Tosh 65hx81 on DVD and HDTV.
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#6 of 10 sean_pecor

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Posted May 08 2003 - 12:48 PM

Quote:
1. Can I have burn-ins if I play video games on DLP projector. How about LCD projectors? I have only found informations about burn-ins in RPTV and I don´t know if it´s same with front projectors.


Niether DLP or LCD is subject to burn-in.

Quote:
2. I am sitting about 12 ft. from the screen. How large can the screen be so it´s comfortable to watch. I don´t want to look constantly from right to left to see what is going on on the screen.


I hear ya Posted Image If you're about 12 feet from eyeball to screen then a 16:9 92-110" diagonal screen is safe. This would be a 30-36 degree viewing angle, which many people aim for when building a home theater.

Here is a quick and easy way to test out what you're comfortable with. Display either an mpg movie on your monitor, or a DVD, or a full screen picture of some sort.

Simulating a 30 degree viewing angle

If you have a 15" monitor then watch the display with your eyes approx. 22" away from the monitor. If you have a 17" monitor then watch the screen from 25".
If you have a 19" monitor then watch the screen from 28".

Simulating a 36 degree viewing angle

15" monitor? Keep eyes 18" away. 17" monitor? Keep eyes 20" away. 19" monitor? 23" away.

As for myself, I tend to prefer smaller viewing angles, generally around 26 degrees. This would be an 80" diagonal from 12 feet. On my main workstation I use a 19" monitor from about 26", which works out to about a 34.5 degree viewing angle. This is perfect for me, but if I was watching a movie on it I'd want to be further away Posted Image

Quote:
3. Does the room have to be totally dark to enjoy the picture. The projector is 600 lumens.


Manufacturers reported lumens tend to be highly exaggerated and you'll get less than their reported lumens in a real-world setting. At 600 lumens, you'd want almost total light control to get the X1 to perform nicely. You might consider the following alternatives:

Sanyo PLV-Z1 (700 lumens)

Panasonic L300U (800 lumens)

Personally, I'd go with the 300U.

Sean.
President, Lead Developer
Digital Spinner, Inc.
http://www.digitalspinner.com

#7 of 10 Bill Lucas

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Posted May 09 2003 - 12:52 AM

The only way a digital projector can "squeeze" the image is to use an anamorphic lens attachemnt. Any time a 4:3 digital panel is used for 16:9 material the full resolution of the panel will not be utilized.

#8 of 10 MarkusBen

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Posted May 09 2003 - 05:32 AM

Thanks for the replies but I am going to buy Sharp XV-Z91E. It has great performance and it is not too expensive.

#9 of 10 Brian Schucher

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Posted May 09 2003 - 12:24 PM

I think Toshiba has a 16x9 DLP coming in june with a list price off 3999.00 I expect it to street lower than that and i think its the first DLP with 16x9 AR under 5K

#10 of 10 JakeMcM

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Posted May 09 2003 - 08:58 PM

I think there is a yamaha 16x9 dlp coming in June that should go for around 3,000. I have a pany L300 and can sort of stand it with some light, if I put my ceiling light on it washes out really bad, it definently is better when its really dark. I use mine only for movies and video games, if I watch TV I go out in the other room, if your room is big enough you could keep it in the same room as the pj and use it for your tv watching during the day/lights on





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