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BENQ TK850i SMART HOME ENTERTAINMENT PROJECTOR REVIEW

The BenQ TK850i is an excellent home theater projector that sells at a MSRP of $1699. Built off of Texas Instruments, highly regarded 0.47" DMD DLP system and utilizing XPR technology the TK850i is a powerful pairing TI and BenQ technologies, that, together, create the impressive 4K image projected on screen. The TK850i is a pixel shifting projector that displays a native 4K resolution of 3840 x 2160 pixels on screen.

The TK850i is one of the latest of a series of 4K UHD projectors from BenQ. Those of you familiar with BenQ models like the HT3550 and 3550i, as well as the non-smart version of this projector the TK850, will be happy to see that BenQ has used much of the same technology that made these projectors such strong performers.

Here at projector reviews we have been fortunate enough to do detailed testing of the BenQ models that share the TK850i design aesthetics. Previous models like the HT3550 and 3550i were praised for their ability to create a remarkably good 4K image, in large part due to its implementation of HDR technology. As with its previous offerings the BenQ TK850i is one of the best, in class, projectors at handling 4K HDR content. As you will see below this performance advantage is anchored in BenQ’s expertise at image processing. Specifically, BenQ Auto Tone Mapping and Color Mapping technologies combined with BenQ’s Dynamic Iris technology give this projector the ability to improve image quality in almost any HDR content displayed.

With the TK850i BenQ has managed to increase the projectors light output by a third when compared to previous models like the HT3550. This increase means that the TK850i will perform remarkably well both in darkened rooms or in rooms with uncontrolled ambient lighting.

If you are thinking about stepping up to a 4K home theater projector then put the BenQ TK850i on your list of projectors to strongly consider buying.

Highly recommended projector award
BenQ TK850i Specs
Price $1699
Technology DLP with XPR (0.47” DMD)
Native Resolution 1920x1080x4
Brightness (Manufacturer Claim) 3000
Contrast 30,000:1
Zoom Lens Ratio 1.3x
Lens Shift Yes
Lamp Life 4,000 Hours
Weight 9.3 Lbs.
Warranty 3 Years/20,000 Hours

OVERVIEW

The BenQ TK850i is a single-chip DLP projector, sporting Texas Instruments “smaller” 0.47” 4K UHD DLP chip set. The TK850i projector claims 3000 lumens and has a list price of $1699.

This is a projector designed to handle the latest and greatest 4K content with HDR. One really nice feature to note is that the TK850i supports both HDR10 and HLG HDR. The TK850i features a dynamic iris designed to enhance black level performance. The lens on this projector features a modest vertical lens shift of +/-10% which is always better than using the projector’s keystone correction for squaring up the image. There’s an onboard speaker system featuring two 5-watt speakers that gives the TK850i some decent stand-alone sound capabilities should you choose to use it without plugging into an external sound system.

The BenQ TK850i is a relatively small home theater projector, measuring 14.96 x 5 x 10.35 in and weighing in at 9.3 lbs.

The TK850i uses a 0.47” DMD DLP projector that creates a 4K image through the use of pixel shifting. Pixel shifting uses a native resolution 1920×1080 sensor to fire the same pixel four times, shifting where it hits the screen slightly each time, to create a total of 8.3 million distinct pixels on the screen.

BenQ claims the TK850i produces a brightness of 3000 lumens, which we’ll be testing. When looking at the TK850i by the numbers, it appears to be quite a projector. Let’s see if it holds up to testing.

HIGHLIGHTS

  • 4K UHD 3840 x 2160 On-Screen Resolution
  • 3D-Compatible
  • Android TV OS via Included Adapter
  • Wi-Fi Connectivity via Included Adapter
  • Google Assistant via Included Adapter
  • 15,000 hours light source life in SmartEco Mode (10K Eco, 4K Normal)
  • 10-Element, 8-Group Lens Array
  • 1.3x Zoom and 1.13 to 1.47:1 Throw Ratio
  • Two HDMI 2.0b Inputs
  • Analog Audio Output
  • USB Type-A 3.1 Gen. 1
  • Built-In 10-Watt Stereo Speakers
  • HDR-PRO™ technology for authentic HDR
  • HDR10 & HLG Compatibility Brightness of 3000 ANSI Lumens
  • Contrast Ratio (FOFO) 30,000:1 (Dynamic Iris)
  • 98% of Rec.709 color accuracy
  • Dynamic Iris improves black levels
  • Dimensions: 12’”W x 4”H x 9”D
  • Weight: 9.2 lbs.

The brand new BenQ HT3550 was sitting in my theater, being run through its paces, two weekends ago.  The HT3550 I have here is a late pre-production model, with finished color tables.  BenQ advises that final production units will have a couple of features not finished here, but we’ll deal with that when we do the full review which should publish in a few weeks after this "first look."

BenQ Specs
Price
Technology DLP
Native Resolution 1920x1080x4
Brightness (Manufacturer Claim) 2000
Contrast 30,000:1
Zoom Lens Ratio
Lens Shift
Lamp Life
Weight
Warranty

Overview

I put 14 hours on the BenQ HT3550 (so far), including about an hour with the BenQ team in attendance. 

Normally I have a projector hooked up nearby when writing these reviews, but in this case, I’ll work from memory, as I shipped the HT3550 to Eric for calibration.  It will return here in a week, when I’ll start my full review.  We will be publishing calibration settings for the HT3550.

Disclosure: I’m a bit of a BenQ fan – back in the old 720p days – around 2005 or so, I owned three successive BenQ HT projectors their PE8700, PE8720, and PE7700.

Back then, and today, it seems we can count on BenQ for emphasizing color accuracy.  More so than any of the other DLP projectors, it seems BenQ still offers about the best color, right out of the box, without adjustment.  This HT3550 fully met expectations.

HT3550 skin tones Jennifer Lawrence
The first HT3550, despite its issues and my complaints about HDR/P3, does a very good job on this Passengers scene with Jennifer Lawrence (Aurora)

This projector is not a replacement for the HT2550 (Hot Product Award winner), rather, it is a step up projector in terms of performance, but starts out at only $1499!  

Some basics, and then my preliminary findings about the picture quality.

Highlights

  • The HT3550 claims 2000 lumens
  • It has improved contrast, thanks to the addition of a Dynamic Iris
  • It has a color filter in addition to the usual DLP color wheel. The filter operates in HDR10 mode, allowing the HT3550 to approach full P3 color (they claim 95% of P3).
  • BenQ claims more dark details, thanks to Dynamic Black (found on most DLP projectors), additional processing, and especially auto Tone Mapping  on HDR content.  (A very good thing!)
  • New front has lens further recessed – to dramatically reduce light leakage (i.e. on your ceiling, if ceiling mounted).  They basically told me that they were tired of me complaining about the amount of light spillage on some older models.
  • Two 5 Watt speakers, provide basic sound (I didn’t play them at all – I will during the review.
  • Support for both popular HDR types the original HDR10 (Blu-ray UHD disk), and Hybrid Log-Gamma (HLG – for broadcast, streaming).
  • Shorter Throw, all glass lens.  The 1.3X zoom projector will sit as close as 8.2 feet from a 100” diagonal screen – most projectors sit at least 10 feet from a 100” screen. 
  • Supports 3D (1080p – there is no 4K standard for 3D)
  • 9.3 pounds

I think I’ve covered the key points above, although I’ll come up with more items to discuss in the full review.   Before you ask, no, there is a modest amount of vertical lens shift on this model. 

Let’s talk about the picture!  Speaking of which, I took no photos before shipping the projector out to Eric.  I will add a couple/few photos to this First Look Review, when I shoot the usual dozens of pics for our full review.  Meantime I’ve “borrowed” a few images from BenQ.

Special Features

Journey to the South Pacific
HT3550 - Stunning colors - but some "over-the-top" on reds, magentas -first HT3550 projector. Material: IMAX 4K Blu-ray: Journey to the South Pacific

I started with 4K Content with HDR – specifically the IMAX Journey To The South Pacfic.  I’ve watched that new release recently on several projectors includijng the $40K Sony VW995ES to the Epson 5040UB.  The content is stunning, and colorful.

I started with 4K Content with HDR – specifically the IMAX Journey To The South Pacfic.  I’ve watched that new release recently on several projectors includijng the $40K Sony VW995ES to the Epson 5040UB.  The content is stunning, and colorful.

Without adjustment, I found the BenQ HT3550 to be a bit oversaturated on most colors on that content, which is vivid to begin with. The HT3550 was definitely a bit over the top compared to the Sony and Epson (the Epson was calibrated, but not the Sony because it was so gorgeous I didn’t feel it needed calibration).

Upon watching other 4K movies, the oversaturation was still there but definitely less noticeable.  I fully expect that with Eric’s adjustments, the 4K content with HDR will be great looking, and not still be over the top.

HT3550 Color Handling, Hardware, and...

BenQ as mentioned is claiming 95% of DCI-P3 color, and that’s about as good as it gets, except for laser projectors.  Eric’s measurements will tell us if it achieves that lofty target.  Epson by comparsion claimed 100% of P3 on their new HC4010 and PC4050 projectors but Eric found the individual colors all coming in between 92% and 100% (still very good).  If the BenQ does that well, or close, that’s really good.  Mind you, P3 color is a subtle improvement, whereas having content with HDR, is anything but subtle, it’s markedly different.

Switching to 1080p and 1080i content, the picture was overall more on the money.  Saturation seemed about right – if anything, on The Hunger Games, and on Casino Royale, I thought that the skin tones were undersaturated a little, but then, the projector might be a little cooler on color temp than right on target.  Overall, 1080p picture quality was really good.

Hardware wise, the HT3550 is pretty typical of other under $2000 DLP projectors - Dual HDMI, stereo speakers, USBs, even a 12 volt screen trigger, and more.  We'll get into the nitty gritty in the full review.

I played with the dynamic iris (hooray).  It works, but it is not as aggressive as some.   BenQ is delivering blacker blacks with it than the HT2550 (based on on, off, comparisons (no iris on the HT2550).

BenQ is not pushing that iris as hard as Epson does theirs, as a result the amount of lowering of the blacks is  more modest. bit still a real improvement over similar DLP projectors without a dynamic iris.  I want to spend more time watching, but I can say that at the minimum, the HT3550’s black levels are not the same old “entry level” blacks levels that I have described for almost all of the 4K UHD DLPs (at least the non-laser models), and even some of those.  This is a very good thing.  

I have yet to put the HT3550 up “side by side” with the Epson 5040UB I have mounted.  I will do that, and have comparison photos in the full review, so stay tuned.

The Bottom Line

The Bottom Line on the new BenQ HT3550.  This projector supports 4K content, is a pixel shifting DLP projector (4K UHD), using the 1920x1080x4 DLP chip.  At $1499 this is one of the few DLPs to sport a dynamic iris for better blacks, and the lowest cost DLP HT projector to offer one. 

Expect improved black levels.  The 2000 lumens provides reasonable brightness for 4K HDR content, and plenty for everything else, on typical screens.  I viewed it filling my full 124” diagonal 2.35:1 screen when watching 4K movies with HDR.  It could have used more lumens at that full size, but so have most projectors doing HDR. The auto tone mapping seems to be very good.  

Let’s see what else I learn when the projector comes back after calibration.  

Meantime, I can’t think of another 4K UHD projector around the HT3550’s price, that I would expect to best this projector in terms of overall picture.  Yes there will be brighter ones, but, based on my first look, BenQ should prove excellent again at color, and have improved black levels.  

My first impression, is that this will likely be my top choice for 4K home theater enthusiasts with $1500 or less budgets!  We shall see! -art

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