Ultra Short Throw Projectors
Discussion
I bought a Samsung Premiere. Cost £7k. Went back after a week. To be fair, I should have done a lot more research, as to get the best out of it ideally you need to paint your room black, preferably with light absorbing paint, and get a proper screen.
The promo shots show it being in a normal living room, and throwing on to a normal wall. That’s what sold it to me. The reality was very different.
The promo shots show it being in a normal living room, and throwing on to a normal wall. That’s what sold it to me. The reality was very different.
Yep, I have a Hisense UST tv projector. 100L5FTUK 100"
Paid £4K for it now you can get them for £3k (make the screen up from a kit) or with the screen already made up then they are £4k
Decided to put my projector on the ceiling and flip the screen.
It is really, no joke, really rubbish during the day. I can screen off the window to make it bearable but it really comes to life in the evening. I have other tv’s I can watch but this is used as my main viewing tv. It’s in my lounge hooked up to a remote Yamaha amp and use a harmony remote to control it all including the lights which I have just put in and re decorated.
I put up with the poor daytime tv as I love the cinema experience in the evening.
Any questions please ask...
Paid £4K for it now you can get them for £3k (make the screen up from a kit) or with the screen already made up then they are £4k
Decided to put my projector on the ceiling and flip the screen.
It is really, no joke, really rubbish during the day. I can screen off the window to make it bearable but it really comes to life in the evening. I have other tv’s I can watch but this is used as my main viewing tv. It’s in my lounge hooked up to a remote Yamaha amp and use a harmony remote to control it all including the lights which I have just put in and re decorated.
I put up with the poor daytime tv as I love the cinema experience in the evening.
Any questions please ask...
BorkBorkBork said:
I bought a Samsung Premiere. Cost £7k. Went back after a week. To be fair, I should have done a lot more research, as to get the best out of it ideally you need to paint your room black, preferably with light absorbing paint, and get a proper screen.
The promo shots show it being in a normal living room, and throwing on to a normal wall. That’s what sold it to me. The reality was very different.
ThisThe promo shots show it being in a normal living room, and throwing on to a normal wall. That’s what sold it to me. The reality was very different.
An alternative suggestion is to paint the room dark red which might be more appealing (black is the ultimate) - dark red will not reflect the light off the walls. Dark Red: https://www.cyberhomes.co.uk/wp-content/uploads/20...
Also for the ceiling, since it's likely to be white, you'll want to avoid a high gloss coating, so stick with a matt finish and that too will reduce reflections.
The purpose of minimising reflections is that if you have a light coloured wall, your going to have a lot of reflections (light) bouncing around the room, and this leads to eye fatigue.
Most UST projectors are rated for 100" or 110" screen diagonal, this is fixed. With a normal projector you can adjust the zoom level to get a range of screen sizes depending on the projection distance. UST doesn't work like that, the throw distance must be what the manufacturer states.
The fact you can get a square picture at all from such a short throw is impressive optics but, and this is a big but, the image compression at the edges is very visible if you look for it. You will find that you can focus the centre but the corners will be soft, you can focus the corners but the centre will be soft. If you want to be criical you can only actually focus the top corners or the bottom corners.
There are designed for schools for cheap installs and that is where they belong.
If you want a projector at home a ceiling mounted standard throw is the way to go if you can control the light levels, otherwise just buy an 75" 4K IPS LED for £3.5K.
The fact you can get a square picture at all from such a short throw is impressive optics but, and this is a big but, the image compression at the edges is very visible if you look for it. You will find that you can focus the centre but the corners will be soft, you can focus the corners but the centre will be soft. If you want to be criical you can only actually focus the top corners or the bottom corners.
There are designed for schools for cheap installs and that is where they belong.
If you want a projector at home a ceiling mounted standard throw is the way to go if you can control the light levels, otherwise just buy an 75" 4K IPS LED for £3.5K.
I have an Optoma HD31UST
https://homeavdirect.co.uk/optoma-hd31ust-full-hd-...
It’s used daily to throw a 120” picture at the far end of my kitchen instead of having a TV on the wall. It’s been in service for about 18mths / 2yrs now and performs excellently. Hooked to Sky Q Mini and an Apple TV.
They do work best with an ALR screen / ALR painted wall but that’s not something I’ve done.
It actually performs pretty well in ambient light conditions and excellently when the rooms darkened.
When the bulb goes I’ll be replacing it with the updated 4K laser variant.
https://homeavdirect.co.uk/optoma-hd31ust-full-hd-...
It’s used daily to throw a 120” picture at the far end of my kitchen instead of having a TV on the wall. It’s been in service for about 18mths / 2yrs now and performs excellently. Hooked to Sky Q Mini and an Apple TV.
They do work best with an ALR screen / ALR painted wall but that’s not something I’ve done.
It actually performs pretty well in ambient light conditions and excellently when the rooms darkened.
When the bulb goes I’ll be replacing it with the updated 4K laser variant.
I have installed both the Optoma X2 Cinema and the 65UST.
If the situation demands it, they are brilliant. An X2 has just gone into a PH's house and projecting straight on to a Mid-grey wall. Image is washed out in the daylight but we have light control so it isnt an issue.
What is an issue is the flatness if the wall, plastering is all over the place. Fortunately the Optoma's have a great matrix screen adjustment to be able to re-align the image (and decorators are due back so they can knock it back a bit)
Can source if needed.
V.
If the situation demands it, they are brilliant. An X2 has just gone into a PH's house and projecting straight on to a Mid-grey wall. Image is washed out in the daylight but we have light control so it isnt an issue.
What is an issue is the flatness if the wall, plastering is all over the place. Fortunately the Optoma's have a great matrix screen adjustment to be able to re-align the image (and decorators are due back so they can knock it back a bit)
Can source if needed.
V.
First USD projectors were crap and barely usable, OK for schools & basic pictures,
very dark, picture distortion at edges and (bright) "hot spot" in the middle were enormous.
Later, some serious manufacturers joined that game and the products were improved,
even allowing our company to stitch pictures together for ultra wide powerwalls.
I think we used Optomas which still were considered "low cost consumer" projectors.
No warping & blending used here, the customer ( university ) developed their own programs for that.
It took the "installation projector" companies a while to step up their game but when they did,
the pictures were quite magic, down to 0.3 or 0.28:1, almost perfect in geometry,
and with the possibilities for fine-tuning adjustments in center focus, edge focus, pincushion/barrel,
and Scheimpflug, although the later was extremely tricky with miniature turns of tiny screws.
This allowed the construction of 4-sided 3D active stereo CAVE systems that were almost as big as the room,
no space lost behind the screens as in older rear-projections, and with a gigantic offset
that resulted in "no shadow on screen" until elbow-length approach.
We used Panasonic DZ 870s for that, 3x USD and one short zoom for the floor, the USD even have a bit of lens shift.
Imagine playing a bit of 3D DOOM or QUAKE in that, the first versions were programmed in real two-channel Open GL 3D.
What I learned the hard way : These things are to be mounted in "perfect" conditions,
projection walls, screens & floors have to be EXACTLY flat and at a 100% right angle,
and the projector mount must be adjustable,so the projector is EXACTLY level to the screen surface(s).
Other installation projectors are vailable now, with 4K, laser, and other features,
but even the "small" F50s mean hanging a car onto your wall or ceiling ( scoll down for the USD lens )
https://www.shi.com/Product/32498500?EventID=a1e5c...
very dark, picture distortion at edges and (bright) "hot spot" in the middle were enormous.
Later, some serious manufacturers joined that game and the products were improved,
even allowing our company to stitch pictures together for ultra wide powerwalls.
I think we used Optomas which still were considered "low cost consumer" projectors.
No warping & blending used here, the customer ( university ) developed their own programs for that.
It took the "installation projector" companies a while to step up their game but when they did,
the pictures were quite magic, down to 0.3 or 0.28:1, almost perfect in geometry,
and with the possibilities for fine-tuning adjustments in center focus, edge focus, pincushion/barrel,
and Scheimpflug, although the later was extremely tricky with miniature turns of tiny screws.
This allowed the construction of 4-sided 3D active stereo CAVE systems that were almost as big as the room,
no space lost behind the screens as in older rear-projections, and with a gigantic offset
that resulted in "no shadow on screen" until elbow-length approach.
We used Panasonic DZ 870s for that, 3x USD and one short zoom for the floor, the USD even have a bit of lens shift.
Imagine playing a bit of 3D DOOM or QUAKE in that, the first versions were programmed in real two-channel Open GL 3D.
What I learned the hard way : These things are to be mounted in "perfect" conditions,
projection walls, screens & floors have to be EXACTLY flat and at a 100% right angle,
and the projector mount must be adjustable,so the projector is EXACTLY level to the screen surface(s).
Other installation projectors are vailable now, with 4K, laser, and other features,
but even the "small" F50s mean hanging a car onto your wall or ceiling ( scoll down for the USD lens )
https://www.shi.com/Product/32498500?EventID=a1e5c...
Edited by Benni on Friday 4th June 01:20
Edited by Benni on Friday 4th June 03:06
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