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Author Topic: TV vs Monitors vs projector  (Read 834 times)

steve p. thomas

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TV vs Monitors vs projector
« on: April 13, 2017, 10:55:06 am »

We have an opportunity to upgrade our average after a tornado damaged our sanctuary. We have been thinking about using large monitors or TVs instead of a projector to display words, videos, etc.
 With all the work being done I can run wire and they can brace the wall for mounting the monitors if needed,so nows the time. The room is about 40' deep and 80' wide. We're thinking about replacing our single long throw projector with two TV, one on each side of the stage since the room is wide.

Is it a good idea to use monitors/TV instead of a projector?

Should we use TVs or computer monitors? I'm not sure about things like resolution. We'll generate all the video from  laptop pc.

Any idea how to figure how big the screens ned to be? The farthest away anyone sits will be about 50:, and some will be only 15' from the screen. I know 50"-55" TVs are cheap.

What type of cable do we want to use to feed the signal (about a 70' run).

Steve


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TJ (Tom) Cornish

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Re: TV vs Monitors vs projector
« Reply #1 on: April 13, 2017, 11:23:08 am »

We have an opportunity to upgrade our average after a tornado damaged our sanctuary. We have been thinking about using large monitors or TVs instead of a projector to display words, videos, etc.
 With all the work being done I can run wire and they can brace the wall for mounting the monitors if needed,so nows the time. The room is about 40' deep and 80' wide. We're thinking about replacing our single long throw projector with two TV, one on each side of the stage since the room is wide.

Is it a good idea to use monitors/TV instead of a projector?

Should we use TVs or computer monitors? I'm not sure about things like resolution. We'll generate all the video from  laptop pc.

Any idea how to figure how big the screens ned to be? The farthest away anyone sits will be about 50:, and some will be only 15' from the screen. I know 50"-55" TVs are cheap.

What type of cable do we want to use to feed the signal (about a 70' run).

Steve


Sent from my 831C using Tapatalk
There are online calculators that go into more detail about the theory of screen size vs viewing distance.  Different applications call for different ratios - a view-filling movie theater has a different goal than I just need to read a few words.

For a 50' viewing distance I think the minimum size that would be even remotely workable would be a 10' wide screen, which translates to a 213" TV.  If that TV existed it would be enormously expensive.  Doing this with screens and projectors is very reasonable - screens are ~$1000 in this size, and 4500 lumen projectors are $1200 - $1500 each.

A 55" TV might be viewable from 20', not from 50'.  I would go the projector route.
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David Allred

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Re: TV vs Monitors vs projector
« Reply #2 on: April 13, 2017, 03:04:27 pm »

I would factor ambient room lighting as well. 

Or... post everything on Facebook.  (Thank where a lot of people are anyway during the sermon.)  Mass-text pictures.
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Nathan Riddle

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Re: TV vs Monitors vs projector
« Reply #3 on: April 13, 2017, 03:12:27 pm »

Just "go live" on Facebook like one of our campus's pastors do even though they have a live-stream smh.

If the room is shallow enough I prefer TV's to projector. But, with that said; projector(s) are needed for larger screen sizes for further viewing distances.

Run multiple cables: HDMI, VGA, Cat6, & IR repeater cable (mic cable).
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lindsay Dean

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Re: TV vs Monitors vs projector
« Reply #4 on: April 13, 2017, 03:34:57 pm »

    lumen rating on projectors are directly related to screen size
and throw distance and ambient lighting.
  Rear projection (if you have the space )
will be a better cost effective choice :)
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Taylor Phillips

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Re: TV vs Monitors vs projector
« Reply #5 on: April 15, 2017, 09:54:19 pm »

I've seen TVs/monitors used for lyric projection in churches in a few places and didn't like them at any of them - too small, suffered from glare.  If you have perfectly controlled lighting in a small space, I think they could possibly work out, but I think your best bet here is the projector.  I will say though that I do like having two screens on either side rather than one in the middle.  One in the middle makes the screen feel too important in my opinion.
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Caleb Dueck

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Re: TV vs Monitors vs projector
« Reply #6 on: April 15, 2017, 11:41:28 pm »

    lumen rating on projectors are directly related to screen size
and throw distance and ambient lighting.
  Rear projection (if you have the space )
will be a better cost effective choice :)
I don't know about rear projection anymore.  You need a really bright projector, then have to deal with hot spotting.  It's very rare now that we install rear projection, usually rear is replaced with front, or LED wall.  Rear works better with plexi or glass screens, but they aren't cheap. 
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steve p. thomas

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Re: TV vs Monitors vs projector
« Reply #7 on: April 19, 2017, 10:14:29 pm »

I don't know about rear projection anymore.  You need a really bright projector, then have to deal with hot spotting.  It's very rare now that we install rear projection, usually rear is replaced with front, or LED wall.  Rear works better with plexi or glass screens, but they aren't cheap.

I do think we are going to need to use projectors, if only for image size.  We can afford at max 65" diagonal TVs.  Those are about 34" tall.  The only metric I've seen is to use the screen height as 1/8th to 1/10th of the distance you can see it.  So a 34" screen at 1/10th the distance would be a max if 340", or about 28 feet.  My back row is 39 feet from the front wall.  So we'd need at least 90 inch screens, and we can't afford those.  So, back to projectors I think.  Unless someone else has better info (this was from the internet, so it must be true!  ;D
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Caleb Dueck

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Re: TV vs Monitors vs projector
« Reply #8 on: April 19, 2017, 10:23:31 pm »

Projectors - yes.  Rear projection - probably not.
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Lance Rectanus

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Re: TV vs Monitors vs projector
« Reply #9 on: April 19, 2017, 10:54:01 pm »

I do think we are going to need to use projectors, if only for image size.  We can afford at max 65" diagonal TVs.  Those are about 34" tall.  The only metric I've seen is to use the screen height as 1/8th to 1/10th of the distance you can see it.  So a 34" screen at 1/10th the distance would be a max if 340", or about 28 feet.  My back row is 39 feet from the front wall.  So we'd need at least 90 inch screens, and we can't afford those.  So, back to projectors I think.  Unless someone else has better info (this was from the internet, so it must be true!  ;D

We installed 2 70" screens two years ago and are very happy with them. Traditional rectangular sanctuary layout, seats 200 people if we pack them in. 60-65 feet from the screens to the back wall. For song lyrics I try to keep it to 4 or 5 lines of text but will occasionally go up to 6 lines. This yields text 4-5" tall, very crisp, very legible. Never any complaints from any of our members about legibility or glare. I run sound from the balcony - roughly 75 feet away. The only issue I have is that they are partially blocked by our lights. I only ever have people sitting "upstairs" on Christmas Eve and Easter, so we don't consider this a huge issue at the moment.
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steve p. thomas

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Re: TV vs Monitors vs projector
« Reply #10 on: April 21, 2017, 01:20:46 pm »

We installed 2 70" screens two years ago and are very happy with them. Traditional rectangular sanctuary layout, seats 200 people if we pack them in. 60-65 feet from the screens to the back wall. For song lyrics I try to keep it to 4 or 5 lines of text but will occasionally go up to 6 lines. This yields text 4-5" tall, very crisp, very legible. Never any complaints from any of our members about legibility or glare. I run sound from the balcony - roughly 75 feet away. The only issue I have is that they are partially blocked by our lights. I only ever have people sitting "upstairs" on Christmas Eve and Easter, so we don't consider this a huge issue at the moment.

Maybe I need to rethink this then.  Our maximum distance to a screen is 39' at about a 30 degree viewing angle.  So using it for lyrics and announcements will work if I keep the letters large as you suggest.  What about videos?  Are they able to see video images ok?  We don't use a lot, but sometimes the pastors or the music team runs a video or movie.
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Lance Rectanus

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Re: TV vs Monitors vs projector
« Reply #11 on: April 21, 2017, 01:39:18 pm »

What about videos?  Are they able to see video images ok?  We don't use a lot, but sometimes the pastors or the music team runs a video or movie.

Videos look fine. I usually convert them to 720p resolution since I can't see a difference between that and 1080 at the viewing distances involved. My quality limitations with videos, and photos for that matter, are mostly related to the initial quality of the material being provided. The LED screens are definitely NOT the weak link in the chain!
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Erik Jerde

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Re: TV vs Monitors vs projector
« Reply #12 on: April 21, 2017, 05:23:04 pm »

I think the usual rule is viewing distance divided by 6.  That would give you a 7' wide screen.  Do front projection with a projector the correct size for your room lighting.
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