Tuesday, July 2, 2013

Help, what home theater projector should I get?

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Tristan T


I need one that can be seen well with lights on with good picture quality and deep color. I want to shine it on my whole wall, 10x15ft, 15 ft away from the wall. Try to find cheapest model.
If you can find one with larger screen please do tell.



Answer
First, you can't get a first class picture from ANY projector with the lights on (any more than you can from a TV).

Second a 10'x15' image at ~12'-13' viewing distance is way too large. At that distance a 125" (diagonal) 16:9 image is pushing the 40 degree limit for subtended angle recommended by THX and is much larger than the 92" image suggested by SMPTE.

That said, if you insist you will need a projector with very high brightness (say 5000 lumens minimum) and high resolution (otherwise the huge fuzzy image will be horrible to look at from that close).

As to specific models see the recommendations for the use you want defined at the upper left at the link.

You are looking at about $10,000 for what you say you want. On the other hand you can get a great projector for a more reasonable image size and a dark room for well under $1000.

I want to buy a projector? How do I know which one is better?




Mutual Hel


When one buys a computer, one looks for the computer's hard drive, RAM, CPU, and so on.

What about when it's a projector? What should I look for? LCD or DLP?



Answer
Projectors range from $600 to $250000 in the consumer arena. It's hard to figure from your question, but here's a couple ideas. Most theater projectors range from $5000 to $40000.

The battle for best display is being fought between 3 chip LCoS and 3 chip DLP. If you have limited lighting control in your room, the DLP is a better choice. You will need the extra driving force of the DLP to overcome the ambient light. If you have good control over light, the LCoS (similar to LCD only much better) will deliver the smoothest, most realistic picture. 3 chip LCoS is actually cheaper than 3 chip DLP which makes it an even nicer choice. Look at JVC.

Other things to look at:

Contrast ratio
We can't distinguish light to dark beyond 2000:1 at any given moment, but over time our eyes can adjust as high as 20000:1. So, a near black screen that immediately goes 20000 times brighter at once will "clip" our sensors in our eyes, but we will eventually adjust to it.

Brightness, measured in ANSI lumens, lux or candellas per sq. meter. Higher is generally better.

Throw distance is important to figure screen size and location

Bulb replacement cost

Loudness of the cooling fan

Formats: 2.35:1 is a nice addition to the standard 16:9 since most large production films are shot in it. Also, film is 24 frames per second instead of video's 30 fps. (or it's multiples.) It's good if the projector can switch back and forth.

Resolution: 1080x1920 native is the standard now.

Calibration: The better projectors can be set to D65, or 6504 kelvin for white. This is important for accurate display. There are minor variations on this theme. Check with a calibrator you trust.

If you're looking at projectors under $5k, you won't find most of what I'm recommending so keep an eye on the contrast and brightness, and the practical issues mentioned above.

Don't forget the popcorn machine!




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