But it also reduces contrast and shifts color balance toward green, so it is not likely to be a preferred choice for users, who in the end will be buying this model specifically for its increased lumen output. Turning Brilliant Color off drops lumen output by 55% (Cinema mode drops from 1792 lumens to about 800 lumens). The white (clear) segment in the color wheel produces a lot of white light compared to color light when the Brilliant Color option is set to "ON." When Brilliant color is Off, color brightness equals 100% of white brightness, as one would expect. In any event, none of the three samples had any observable uniformity issues while viewing program material.Ĭolor Brightness. Since this is essentially the same light engine with a different color wheel, we suspect the difference may be due to manufacturing variance. Our TK800 sample measured a very good 82% uniformity, better than what we saw with either of our two HT2550 test units. The TK800 has a 1.2x zoom lens that we measured a losing about 3% at the telephoto end, so there is no reason to worry about which end of the zoom you're using.īrightness Uniformity. There is also an Economic lamp mode which reduces lumen output by 36%. Turning it off reduces lumen output by about 55%. Like the HT2550 it has a Brilliant Color function that can be turned On or Off (no incremental scale of 1 to 10 as on many DLP projectors). It also has presets labelled Vivid TV, Cinema, Sport, and two custom adjustable User modes. As is typical, this projector has an exceptionally bright factory calibration, called "Bright," which is greenish in tint and for the most part not recommended for video presentation unless you don't mind a green picture. The BenQ TK800 is rated at 3000 lumens compared to the 2200 lumens of the HT2550. The essential change in both the BenQ TK800 and the ViewSonic PX747-4K is the switch to a color wheel that has a white (clear) segment to boost white light output.īrightness. And it has keystone adjustment, a feature that is missing on several of its competitors.Īt the current price of $1499 the BenQ TK800 competes most directly with the ViewSonic PX747-4K at $1299, which is ViewSonic's brighter version of the ViewSonic PX727-4K, also at $1299. It has a much better than average onboard speaker with dynamic range that is surprising for its size-again a nice feature for occasional backyard use. The TK800 weighs 9.3 lbs, so it is portable enough for backyard movie night or other transportable uses. For those who have a collection of 3D discs in 1080p HD resolution, this is a welcome feature. Like the HT2550, the TK800 is 3D capable in native 1080p mode, which is one of the primary distinguishing factors between these two models and several other 4K projectors under $2000. The BenQ TK800 is a brighter version of the BenQ HT2550 one of several new 4K projectors to hit the market in the last few months that is built around the latest 0.47" UHD DLP chipset and selling for $1499. David Stone and reflects his work and that of the original reviewer Evan Powell.-Rob Sabin This revision, dated October 2, 2018, was handled by contributing editor M. Our recent second look at the HT2550 following a firmware and lens upgrade prompted us to update that review, and also to look again at the TK800 and edit this review accordingly.
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