Screen Size / Distance - AVS Forum
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post #1 of 10 Old 06-28-2014, 10:55 AM - Thread Starter
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Screen Size / Distance

Hi everyone. I am going to set up an outdoor theater with the projector mounted underneath the patio roof and it will project to a screen (across the pool) 22' away.

I was thinking about this projector:
Epson Home Cinema 730HD 720p 3LCD Projector
http://www.amazon.com/Epson-Home-Cin...productDetails

1. What size screen should I buy? Is the size of screen based on the distance I am projecting?
2. Are there any better projectors in the same $500-$600 price range?

Thanks!
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post #2 of 10 Old 06-29-2014, 05:17 AM
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According to Projector Central's calculator, at 22 ft you would need a 220" diagonal screen. This is a 16' x 9' screen. As for the projector, there has been a lot of good talk about the 730HD. Here is a link to Projector Central's calculator and to a screen material supplier.

http://www.projectorcentral.com/Epso...ulator-pro.htm

http://www.carlofet.com/

This should point you in the right direction
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post #3 of 10 Old 06-29-2014, 08:13 AM - Thread Starter
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Originally Posted by jwh92020 View Post
According to Projector Central's calculator, at 22 ft you would need a 220" diagonal screen. This is a 16' x 9' screen. As for the projector, there has been a lot of good talk about the 730HD. Here is a link to Projector Central's calculator and to a screen material supplier.

http://www.projectorcentral.com/Epso...ulator-pro.htm

http://www.carlofet.com/

This should point you in the right direction
Thank you so much for your advice.
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post #4 of 10 Old 06-29-2014, 08:16 AM
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FYI - I have a 130" Carl's Black Out Cloth screen that has been outside 24/7/365 for the past 2 years and is till in great shape. The first year it was in Phoenix, AZ and the past year in Oklahoma City. I'm sure they are not designed for this kind of exposure, but mine is holding up really well.
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post #5 of 10 Old 06-30-2014, 05:27 AM - Thread Starter
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A 16' wide screen is a little large for the space I have. A 12' wide screen would fit a little better. I guess there is no way to project onto a smaller screen from 22' away?
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post #6 of 10 Old 06-30-2014, 09:20 AM
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I'm no expert, but I think you would need a projector with a 2.0:1 zoom lens minimum. I just picked picked up a Panasonic PT-F300U on Ebay for $235 shipped. It is 4000 lumens, 600:1 contrast with a 2.1:1 lens. It will hit 12' (144" diagonal) from 15 - 30 feet. At 4k lumens, it's plenty bright. It is an XGA (1024 x 768), not 720p projector and contrast is a bit low, but it throws an incredible picture. It is native 4:3 but it displays 16:9 very well. For the price and what it does, it's a great BYT projector (plus, replacement lamps are less than $100). Here are a couple of pics fyi. The screen shots are were taken at 2:00 pm shot on my bedroom wall. You will see that the circumstances are nothing like outdoors at night but the picture still looks good. I'm replacing my 130" screen with a 165" screen and will shoot 22 feet.
Attached Images
File Type: jpg First Pics Of Panasonic PT-F300U 020.jpg (73.0 KB, 24 views)
File Type: jpg First Pics Of Panasonic PT-F300U 021.jpg (78.7 KB, 24 views)
File Type: jpg First Pics Of Panasonic PT-F300U 014.jpg (66.8 KB, 18 views)
File Type: jpg First Pics Of Panasonic PT-F300U 018.jpg (81.1 KB, 18 views)
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post #7 of 10 Old 07-02-2014, 07:17 AM
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I was reading a thread on here where people were using awide angle camera lens to shorten the throw of their PJ. http://www.avsforum.com/forum/68-digital-projectors-under-3-000-usd-msrp/1161554-i-thought-wide-angle-camera-lens-projector-supposed-work-shortthrow.html

I was wondering if you might lengthen the throw with a zoomlens? I have a couple of lenses with an old Fuji camera that I’ll have to tryand see what it does to the image. I’m thinking with a 1.5x zoom lens youshould be able to do a 12’ wide image from about 24’ with the 730HD.
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post #8 of 10 Old 07-02-2014, 09:39 AM - Thread Starter
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Quote:
Originally Posted by Paul Hovey View Post
I was reading a thread on here where people were using awide angle camera lens to shorten the throw of their PJ. http://www.avsforum.com/forum/68-digital-projectors-under-3-000-usd-msrp/1161554-i-thought-wide-angle-camera-lens-projector-supposed-work-shortthrow.html

I was wondering if you might lengthen the throw with a zoomlens? I have a couple of lenses with an old Fuji camera that I’ll have to tryand see what it does to the image. I’m thinking with a 1.5x zoom lens youshould be able to do a 12’ wide image from about 24’ with the 730HD.
Interesting. I wonder how that effects the picture quality?


By the way, I added the 730HD to my Amazon cart a few days ago when I first started this thread and it was about $579 at the time. Today I notice the price has dropped to $499. I wonder why the big price drop.
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post #9 of 10 Old 07-02-2014, 10:19 AM
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I saw that too. I got the 725HD for $549 back in September when they first came out. Kind of wish I would have waited now. Another year of warranty and $50 less. Oh well. I really like the 725 and I couldn't have waited that long anyway.
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post #10 of 10 Old 07-03-2014, 05:23 AM
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I tried the camera lenses on the PJ last night and they work, but not very well. First, the position of the lens on the 725/730 is not conducive to mounting another lens. The zoom worked pretty well, but was tough to get close enough to the other lens to focus properly. I could see it being useful on a PJ with an exposed or more accessible lens to increase throw distance. The wide angle worked as well, but curved the top of the image. Again, maybe if I could get it closer to the other lens, the distortion might be eliminated. I may have to pull out the old S1+ and see how they work with a more accessible lens.
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