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post #1 of 28 Old 05-28-2019, 03:07 PM - Thread Starter
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Recommendations for short throw projector

Folks - I would like to broadcast a 135 inch image from a 11 feet 2 inches distance and would like to find a projector under $1500. Can you recommend any good ones? I looked at optoma uhd51alv but it's too expensive. I also looked at epson 5040ub but that's too expensive as well. I also looked at epson 3100 and 3700 but they cannot project that size.

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post #2 of 28 Old 05-28-2019, 07:10 PM
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BenQ 3550 can shoot a 136" from 11'2" front of the lens to screen. MSRP is $1500

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post #3 of 28 Old 05-28-2019, 07:11 PM - Thread Starter
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Originally Posted by rekbones View Post
BenQ 3550 can shoot a 136" from 11'2" front of the lens to screen. MSRP is $1500
What's the advantage of this compared to optoma uhd51alv?

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post #4 of 28 Old 05-28-2019, 11:36 PM
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Originally Posted by genaccmiller View Post
What's the advantage of this compared to optoma uhd51alv?

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Advantages of the BenQ over the Optoma are many. It has the 2nd gen of the .46 chip without the large light border, RGBRGB color wheel, Active dynamic iris for better dynamic contrast, FI for smoother motion, Color filter for wide color, and Auto tone mapping for HDR. The only advantage the Optoma may have is more lumens only useful in a bad room with poor light control.
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post #5 of 28 Old 05-29-2019, 03:03 AM - Thread Starter
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Quote:
Originally Posted by rekbones View Post
Advantages of the BenQ over the Optoma are many. It has the 2nd gen of the .46 chip without the large light border, RGBRGB color wheel, Active dynamic iris for better dynamic contrast, FI for smoother motion, Color filter for wide color, and Auto tone mapping for HDR. The only advantage the Optoma may have is more lumens only useful in a bad room with poor light control.
Actually, the Optoma has RGBWRGBW light wheel. Isn't that more superior? And it has the 0.47 chip in addition to more lumens that you already stated. Also it is UHD. I believe the Benq is too. How important is the difference going to be between 2000 and 3000. Also my ceiling height is 7.5 feet and distance to screen will be 11.2 feet. How important is vertical shift in this?

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post #6 of 28 Old 05-29-2019, 06:04 AM
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BenQ has the 2nd generation 4X .47 chip as I forget all the exact numbers. BenQ is UHD and as far as placement they both are about the same with 10% vertical shift. Both need to be inverted at or slightly above the top of the screen when ceiling mounted. Optoma can get brighter with the white segment but color brightness suffers because less color surface on the wheel.

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post #7 of 28 Old 05-29-2019, 07:24 AM
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I had an Optoma UHD60 which had the RGBW type wheel. It was good from a brightness and contrast perspective, but not as good with black levels. I would recommend the HT3550 if I had to choose between that and the UHD51, especially since it has dynamic iris and tone mapping capabilities.
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post #8 of 28 Old 05-29-2019, 07:30 AM - Thread Starter
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Unfortunately it looks like the benq ht3550 will not work for me due to the following reasons. My ceiling height is only 7.5 feet and distance to screen is about 11.2 feet. I will need as high a brightness as possible and looks like benq only supports 14 lamberts. If I go spandex, the screen will need to reflect a lot of light as well and a lower lumen would compromise it. Additionally it only has a 10pct vertical lens shift compared to the Optoma which has a 15pct vertical lens shift and only has a 3 inch image offset, all of which will be important for a smaller height room. So I guess the choice comes down to either optoma uhd21alv or Epson 3700. With Epson 3700 I may have to sacrifice the image diagonal size and would need to probably go for a smaller screen like 120 inch.

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post #9 of 28 Old 05-29-2019, 10:24 AM
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Sounds like spandex + epson 3700 @ 120" would be a winner.
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post #10 of 28 Old 05-29-2019, 10:28 AM - Thread Starter
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Originally Posted by Radio81 View Post
Sounds like spandex + epson 3700 @ 120" would be a winner.
What about 3700 plus silver ticket screen?

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post #11 of 28 Old 05-29-2019, 12:04 PM
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There's too many variables/unknowns here. What are your room dimensions? Is the room light controlled with dark walls, ceiling, room treatments, etc?

Do you need an AT screen, or can you do a non AT screen?
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post #12 of 28 Old 05-29-2019, 12:08 PM - Thread Starter
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Quote:
Originally Posted by Radio81 View Post
There's too many variables/unknowns here. What are your room dimensions? Is the room light controlled with dark walls, ceiling, room treatments, etc?



Do you need an AT screen, or can you do a non AT screen?
Distance between projector to screen front will be 11.2 inches. Width of the room will be 13 feet. Room is fairly dark. I just need to close one small window. And yes I need an AT screen.

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post #13 of 28 Old 05-29-2019, 04:54 PM
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Did anyone mention the Optoma won't work for his situation? He's 8" off his mark for a 135" screen. He needs to back it up to 11'10" to do a 135" screen.

The BenQ is the only one that will do it. I should know because I was pushing for 120" from about 10'6", and nothing else was going to work except for the 3550 and 2050a. No Epson UB or Optoma UHD5x.

And you're not getting 120" with the 3700 either. You're 5" too short. Unless projector central is wrong about all the above.

And the projection calculate says your getting 18fL with a 135" screen from. 11'2" with the 3550. With a 7 1/2' ceiling I imagine it would be mounted close to flush to the ceiling too if my 2050a with an 8ft ceiling is any indication.

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post #14 of 28 Old 05-29-2019, 04:59 PM - Thread Starter
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Did anyone mention the Optoma won't work for his situation? He's 8" off his mark for a 135" screen. He needs to back it up to 11'10" to do a 135" screen.

The BenQ is the only one that will do it. I should know because I was pushing for 120" from about 10'6", and nothing else was going to work except for the 3550 and 2050a. No Epson UB or Optoma UHD5x.

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The problem with benq is the limited vertical adjustment. I guess I need to downscale my expectations for screen size.

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post #15 of 28 Old 05-29-2019, 05:04 PM
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Originally Posted by genaccmiller View Post
The problem with benq is the limited vertical adjustment. I guess I need to downscale my expectations for screen size.

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My 2050a (same placement as the 3550) is mounted just a couple inches from the ceiling from about a 10'6" throw to a 120" screen. The screen starts about 6" from the ceiling. You might be ok with it mounted as flush as possible (the projector and the screen) to the ceiling.

I have a pipe mount, and I went from an 8" pipe with my last projector to just the double threaded connector with the 2050a.

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post #16 of 28 Old 05-29-2019, 05:07 PM - Thread Starter
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Originally Posted by dbpaddler View Post
My 2050a (same placement as the 3550) is mounted just a couple inches from the ceiling from about a 10'6" throw to a 120" screen. The screen starts about 6" from the ceiling. You might be ok with it mounted as flush as possible (the projector and the screen) to the ceiling.

I have a pipe mount, and I went from an 8" pipe with my last projector to just the double threaded connector with the 2050a.

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Wouldn't that compromise viewability as in we need to keep our head raised always to see the movie?

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post #17 of 28 Old 05-29-2019, 05:13 PM
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Originally Posted by genaccmiller View Post
Wouldn't that compromise viewability as in we need to keep our head raised always to see the movie?

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My head hits somewhere between a 1/4 and a 1/3rd from the bottom of the screen. I don't move my neck to watch the whole thing. My eyes move, but it's nowhere near putting a TV above the fireplace. The bottom of my screen is just over two feet off the floor with top of my center channel at 2/3rds the way into the velvet border of the screen.

And of course movies don't go nearly as high up as a 16:9 show.

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post #18 of 28 Old 05-29-2019, 07:10 PM
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If you really need the screen very close to the ceiling there is a trick to avoiding keystone. You can tilt the projector up slightly so the image is closer to the ceiling and tilt the top of a fixed screen out thus avoiding any keystone.
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Originally Posted by rekbones View Post
If you really need the screen very close to the ceiling there is a trick to avoiding keystone. You can tilt the projector up slightly so the image is closer to the ceiling and tilt the top of a fixed screen out thus avoiding any keystone.
Thanks for reminding me of this old keystone solution. Tilting the screen to make it perpendicular to a tilted projector is technically known as manual keystone correction. This is how keystone was corrected before projector companies added digital keystone correction. Manual keystone correction has a major advantage over digital keystone correction as it doesn't reduce resolution and cause artifacts as the digital version does. Manual keystone correction should be recommended more often as it has no downside.
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post #20 of 28 Old 05-30-2019, 11:40 AM
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When comparing the Optoma to the BenQ contrast ratio has not been mentioned. 500000:1 vs 30000:1 Are these numbers not as important as I think they are? I currently have an Optoma UHD51ALV but the BenQ HT3550 is catching my eye due to all the added features over the Optoma but that differences in contrast ratio is substantial. With iris on the BenQ shouldn’t those numbers be closer or is there some discrepancy in the way contrast is measure by manufacturers?


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post #21 of 28 Old 05-30-2019, 01:33 PM
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Originally Posted by Gamecock24 View Post
When comparing the Optoma to the BenQ contrast ratio has not been mentioned. 500000:1 vs 30000:1 Are these numbers not as important as I think they are? I currently have an Optoma UHD51ALV but the BenQ HT3550 is catching my eye due to all the added features over the Optoma but that differences in contrast ratio is substantial. With iris on the BenQ shouldn’t those numbers be closer or is there some discrepancy in the way contrast is measure by manufacturers?


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Native contrast is about the same between these two PJs and similar using dynamic lamp control (Dynamic/Smarteco) but the BenQ is better when using the dynamic iris.
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post #22 of 28 Old 05-30-2019, 01:40 PM
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So basically it’s Native contrast and dynamic contrast and the manufacture just publish which ever one they want.


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post #23 of 28 Old 05-30-2019, 02:21 PM - Thread Starter
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So basically it’s Native contrast and dynamic contrast and the manufacture just publish which ever one they want.


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Now I am even more confused.

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post #24 of 28 Old 05-30-2019, 03:51 PM
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Originally Posted by genaccmiller View Post
Now I am even more confused.

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You really have to read the various published online reviews to fully understand the differences between them.
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post #25 of 28 Old 05-30-2019, 04:16 PM
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Originally Posted by DunMunro View Post
You really have to read the various published online reviews to fully understand the differences between them.
Or poke around here and see if anyone has done head to head comparisons. Even if the Optoma has slightly better native, the dynamic iris on the 3550 is going to make it better in dynamic contrast.

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post #26 of 28 Old 05-30-2019, 07:34 PM
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Originally Posted by genaccmiller View Post
Now I am even more confused.

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Native contrast of the first gen .47 chip is about 800:1 and the second gen is a little higher due to the reduction of the light border. Manufactures posted contrast is always dynamic and even those numbers are just marketing double speak so you can generally ignore them. JVC is the only company that I know of that posts their native contrast and in comparison it is a realistic 40,000:1 for their entry level LCOS and upwards of 80,000:1 for the higher up models.

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post #27 of 28 Old 05-31-2019, 04:43 AM
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Recommendations for short throw projector

Quote:
Originally Posted by genaccmiller View Post
Now I am even more confused.

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Sorry for the added confusion.

You asked about using the HT3550 with a Slate 1.2 screen in the screens forum. At that time I didn’t know anything about the HT3550 so I looked into it. I have to say with all the features it was making me think about upgrading from my 6 month old Optoma UHD51ALV. If I was in the market for a new projector the HT3550 would probably be the one I’d go for.


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post #28 of 28 Old 05-31-2019, 08:29 AM
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There is no industry standard for contrast as advertised in manufacturer specifications, so they are largely marketing numbers used to attract inexperienced projector shoppers. If you want actual contrast numbers you need to rely on independent reviewer measurements with calibrated test equipment.
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