Optoma UHD550X 4K UHD 2800 ANSI Lumens DLP Home Entertainment Projector - White £1499 @ Amazon
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Optoma UHD550X 4K UHD 2800 ANSI Lumens DLP Home Entertainment Projector - White £1499 @ Amazon

54
Found 24th Dec 2017
Cheaper than black Friday deal. Full 4k projector.
Merry Christmas folks.
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Optoma UHD550X 4K UHD 2800 ANSI Lumens DLP Home Entertainment Projector

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OP, might want to state it is:
"Optoma UHD550X 4K UHD 2800 ANSI Lumens DLP Home Entertainment Projector - White"
Might be worth having the actual product in the title...? Just a thought.

Optoma UHD550X 4K UHD 2800 ANSI Lumens DLP Home Entertainment Projector
That room there is the size of my flat.....
Is this true 4k, or just a pixel shifter?
digipeep4 m ago

Is this true 4k, or just a pixel shifter?


The panel is not true 4k, the image is extrapolated to 4k for projection. True 4k projectors are expensive, the cheapest around 5k from Sony
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It has been slightly cheaper before so no idea why the title suggests it's the cheapest it's ever been. Still a great price though.
Edited by: "seanrtkelly" 25th Dec 2017
Waiting for these to drop around the £1000 price.
tempt16 m ago

The panel is not true 4k, the image is extrapolated to 4k for projection. …The panel is not true 4k, the image is extrapolated to 4k for projection. True 4k projectors are expensive, the cheapest around 5k from Sony


Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is this like the 1080p Chinese projectors with 800x480 DLPs in them?...that can accept a 1080p signal and extrapolate it into mush?
SleepyChris5 m ago

Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is …Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is this like the 1080p Chinese projectors with 800x480 DLPs in them?...that can accept a 1080p signal and extrapolate it into mush?

​Nah it basically shifts pixels really fast giving the impression there are more pixels at any given point. Good to see prices coming down not sure how good this one is tho
mazabits53 m ago

That room there is the size of my flat.....


Oh, Snap! We have the same size homes
Micro-shifting. If you move fast enough you can make one 1080p pixel on the DMD produce 4 pixels from a 4K image on screen. It's better than upscaling since a 4K input gets a 4K output but a full native 4K DMD is preferable on image quality grounds.

*edit* missed some key points. Pixel-shifting can double the resolution but no more. Is used by 3LCD 1080p systems to get closer to 4K. This projector has a higher than 1080p DMD and can actually hit 4K with pixel-shifting.
SleepyChris11 h, 31 m ago

Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is …Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is this like the 1080p Chinese projectors with 800x480 DLPs in them?...that can accept a 1080p signal and extrapolate it into mush?

Edited by: "CampGareth" 25th Dec 2017
SleepyChris3 h, 8 m ago

Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is …Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is this like the 1080p Chinese projectors with 800x480 DLPs in them?...that can accept a 1080p signal and extrapolate it into mush?



Mush? mmmmmmmmmmm
tempt5 h, 39 m ago

The panel is not true 4k, the image is extrapolated to 4k for projection. …The panel is not true 4k, the image is extrapolated to 4k for projection. True 4k projectors are expensive, the cheapest around 5k from Sony


Projectors don't use panels. The image is not extrapolated, it is projected as true 4k by using overlapping pixels.
Daves_mate5 h, 18 m ago

​Nah it basically shifts pixels really fast giving the impression there a …​Nah it basically shifts pixels really fast giving the impression there are more pixels at any given point. Good to see prices coming down not sure how good this one is tho


It is very good. I have the UHD60 which is a brighter,higher contrast version of this. Not much between them.
SleepyChris5 h, 26 m ago

Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is …Extrapolated to 4k? Pixel shifting? What is this underhand tomfoolery? Is this like the 1080p Chinese projectors with 800x480 DLPs in them?...that can accept a 1080p signal and extrapolate it into mush?


No to all of your questions.
CampGareth3 h, 24 m ago

Micro-shifting. If you move fast enough you can make one 1080p pixel on …Micro-shifting. If you move fast enough you can make one 1080p pixel on the DMD produce 4 pixels from a 4K image on screen. It's better than upscaling since a 4K input gets a 4K output but a full native 4K DMD is preferable on image quality grounds.


That's total rubbish. This does not use a 1080p chip. Stop misinforming and trying to sound like you know what you are talking about when your sentences don't even make sense.

So many ignorant comments and cold votes to boot.
From m.hexus.net/ce/…or/

the UHD550X comes equipped with the same DLP imaging device as its brethren; a single-chip design from Texas Instruments that boasts a native 2,716x1,528 resolution and XPR (eXpanded Pixel Resolution) technology. XPR works by exploiting the fast switching speed of the DLP chip to display two individual pixels for each of the 4 million mirrors, helping deliver the requisite 8.3 million pixels (3,840x2,160).

A shrewd method of meeting the Consumer Technology Association (CTA) requirements for both 4K UHD and HDR compatibility while keeping pricing down to an absolute minimum.
It's a UHD 4k certified projector. Which to any naysayers here means that it literally projects 4k resolution with HDR.
So, YES it is a true 4k projector.
FunkiestMonkey46 m ago

It's a UHD 4k certified projector. Which to any naysayers here means that …It's a UHD 4k certified projector. Which to any naysayers here means that it literally projects 4k resolution with HDR.So, YES it is a true 4k projector.


How can it be true 4K when it uses a chip with only 2,716x1,528 resolution? There is processing involved to expand the native pixel count to 4K. A true 4K projector is one where the chip is native 4K and the projected image is a one-to-one mapping with no trickery or post-processing.
i think the image is fed through an optical actuator which can be in 2 states, and shifts the image slightly to the side. if it does this fast enough it can almost display 4k.

i,e, if you had a one pixel dlp and fed it throught the vibrating optical shifter, you would see 2pixels which can be addressed individual . it s a bit like multiplexing.
tempt2 h, 15 m ago

How can it be true 4K when it uses a chip with only 2,716x1,528 …How can it be true 4K when it uses a chip with only 2,716x1,528 resolution? There is processing involved to expand the native pixel count to 4K. A true 4K projector is one where the chip is native 4K and the projected image is a one-to-one mapping with no trickery or post-processing.


Simple, if it runs at double the frame rate, and one frame does half the pixels and the other frame does the other half of the pixels. In the same period of a normal refresh rate, the same 4k pixels have been shown.
I guess if the 1080p pixels are shifted half a pixel then they will overlap their neighbors. The pixels would have to be 1/4 size with black around them for this to generate true 4k...are there only 2 shifted positions or 4? I wonder what the shifting mechanism is, if it's mechanical (might be part of the colour/ shutter disc as I read these often have 2 of each colour around them) and what the shifting frequency is.
FunkiestMonkey3 h, 14 m ago

That's total rubbish. This does not use a 1080p chip. Stop misinforming …That's total rubbish. This does not use a 1080p chip. Stop misinforming and trying to sound like you know what you are talking about when your sentences don't even make sense.So many ignorant comments and cold votes to boot.


You get a like for saying "to boot"...good effort
FunkiestMonkey3 h, 23 m ago

Projectors don't use panels. The image is not extrapolated, it is …Projectors don't use panels. The image is not extrapolated, it is projected as true 4k by using overlapping pixels.


If the pixels overlap then I guess they cannot be unique and there has to be some kind of compromise going on as the overlapping colours will mix
No idea why this is so cold, this is £500 cheaper than anywhere else. Great post op, tempted
DeanSupreme.uk10 h, 37 m ago

Waiting for these to drop around the £1000 price.


I got one of these on a warehouse deal for £1K
You're going to be waiting a long long while until they go down to that rrp
FunkiestMonkey5 h, 59 m ago

That's total rubbish. This does not use a 1080p chip. Stop misinforming …That's total rubbish. This does not use a 1080p chip. Stop misinforming and trying to sound like you know what you are talking about when your sentences don't even make sense.So many ignorant comments and cold votes to boot.


Why so angry? Oh right, you're OP. When faced with ignorance, educate, don't yell.

An overview of pixel-shifting in 4K projectors

We've had 1080p 3LCD systems using pixel shifting and claiming to be 4K (well '4K enhanced HD'), as stated in the linked page they can't do single-pixel accuracy so aren't real 4K. This is not one of those (surprising given the price tag). It can do single-pixel accuracy. It is 4K.
CampGareth7 h, 31 m ago

Why so angry? Oh right, you're OP. When faced with ignorance, educate, …Why so angry? Oh right, you're OP. When faced with ignorance, educate, don't yell. An overview of pixel-shifting in 4K projectorsWe've had 1080p 3LCD systems using pixel shifting and claiming to be 4K (well '4K enhanced HD'), as stated in the linked page they can't do single-pixel accuracy so aren't real 4K. This is not one of those (surprising given the price tag). It can do single-pixel accuracy. It is 4K.


This is not a 1080p chip so that is misinformation. That's all.
SleepyChris11 h, 3 m ago

If the pixels overlap then I guess they cannot be unique and there has to …If the pixels overlap then I guess they cannot be unique and there has to be some kind of compromise going on as the overlapping colours will mix


Overlapping and micro switching equals the light coming out being true 4k. Hence the certification of 4k and uhd. Don't get hung up on the input and processing, what comes out of the lens what is displayed on screen and what hits your eye are 4k and HDR in every sense of the word.
Sorry to push my point, but if you have a blue 4k pixel next to a green 4k pixel....how is that achieved?
Edited by: "SleepyChris" 25th Dec 2017
trustedreviews.com/rev…d60


Its native 4K claims, meanwhile, are backed up by outstanding image detailing and sharpness when watching 4K sources. There’s no way any HD or even pseudo 4K projector I’ve seen to date could match the intense textures, fine shading, and freedom from both jagged contours and visible image/pixel structure that the UHD60 enjoys.

In fact, the UHD60 does as effective a job as Sony’s native 4K projectors, reminding you that 4K really comes into its own at the sort of huge screen sizes projectors make possible.

Great although it would be great to feed the UHD60 an exclusively 4K HDR diet, today’s AV world isn’t quite up to that yet. As such, it’s great to find that the UHD60 takes HD-resolution and SDR content in its stride.


Read more at trustedreviews.com/rev…d60
Curse you, hot UK dealers. Damn you. Humbug.
They put this on boxing day sale and jacked up it’s price.
tempt6 h, 24 m ago

They put this on boxing day sale and jacked up it’s price.


I've expired the deal. It was too good for hot UK deals numpties.
FunkiestMonkey26 m ago

I've expired the deal. It was too good for hot UK deals numpties.


Gone up by only £25, should be unexpired.
tempt1 h, 3 m ago

Gone up by only £25, should be unexpired.


1499 at AO.com. post a new deal.
FunkiestMonkey3 m ago

1499 at AO.com. post a new deal.


No thanks, i’ll let it pass. No fake 4K deals from me.
tempt49 m ago

No thanks, i’ll let it pass. No fake 4K deals from me.


As I said, too good for hot UK deals numpties. And you prove my point grandly.
FunkiestMonkey2 h, 36 m ago

As I said, too good for hot UK deals numpties. And you prove my point …As I said, too good for hot UK deals numpties. And you prove my point grandly.


Lol
Don't listen to the idiots

This is a fantastic protector. I've owned 4 so far and the change from my last protector to this is as big an upgrade as going from tv to projector
FunkiestMonkey3 h, 15 m ago

As I said, too good for hot UK deals numpties. And you prove my point …As I said, too good for hot UK deals numpties. And you prove my point grandly.


Go on, post that AO deal. I'll vote hot to make you feel better, it's Christmas and the season of giving.
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