ProjectorDB

BenQ TH671ST vs BenQ TK850

BenQ TH671STBenQ TH671ST
$849
BenQ TK850BenQ TK850
MSRP $1,699
Key differences
Throw ratio0.69–0.83:11.13–1.47:1
Lowest input lag16.7 msDerived83.34 msDerived
HDR formats—HDR10, HLG
Fan noiseNormal 33 dB(A) · Eco 29 dB(A)Normal 30 dB(A) · Eco 28 dB(A)
Price$849MSRP $1,699
Room fit
Distance to screen1.5–1.8 m2.5–3.3 m
Brightness
Rated brightness3,000 lmDerived3,000 lmDerived
White light outputANSI3,000 lm ANSI3,000 lm ANSI
Display system
Imaging technologyDLPDLP
Chip / panel diagonal0.65 in0.47 in
On-screen resolution1080p (1920 × 1080)Derived4K UHD (3840 × 2160)Derived
Native resolution1080p (1920 × 1080)1080p (1920 × 1080)
Native aspect16:9Derived16:9Derived
Pixel shift—XPR 4-way
Addressable resolution—4K UHD (3840 × 2160)
Colour wheel segments64
Colour wheel speed2×2×
Contrast
Dynamic contrast10,000:130,000:1
Colour
Colour gamutRec. 709 92% coverageRec. 709 98% coverage
Colour bit depth (per channel)10 bit10 bit
Gamma / EOTF presets2.2, 2.4, 2.62.2, 2.4, 2.6
HDR
HDR formats—HDR10, HLG
Calibration
Colour management (CMS)6-axis6-axis
Picture mode memories2—
3D
3DYesYes
3D formatsFrame packing, Side-by-side, Top-bottom, Frame sequential—
3D glasses syncDLP-LinkDLP-Link
Light source
Light sourceLampLamp
Lamp power240 W245 W
Replacement lamp—5J.JKC05.001
Light-source life4,000 h normal · 10,000 h eco · 15,000 h super eco · 10,000 h dynamic4,000 h normal · 10,000 h eco · 15,000 h super eco
Warm-up time30 s—
Cool-down time90 s—
Optics
Throw ratio0.69–0.83:11.13–1.47:1
Image size60–120 in30–300 in
Projection offset103%100%
ZoomOpticalOptical
Zoom ratio1.2×Derived1.3×Derived
Focal length10.2–12.24 mm12–15.6 mm
Aperture (f-number)2.6–2.781.9–2.47
FocusManual—
AutofocusNo—
Vertical lens shift—0–10%
Vertical keystone40°30°
Auto keystoneNoYes
Lens elements—10
Motion & gaming
Frame interpolation (MEMC)—Yes
Max input refresh1080p: 60 Hz—
Max refresh at 1080p60 HzDerived—
Input lag1080p: 60 Hz 16.7 ms1080p: 60 Hz 83.3 ms · 4K UHD: 60 Hz 83.3 ms
Lowest input lag16.7 msDerived83.34 msDerived
Input lag at 4K 60 Hz—83.34 msDerived
Inputs & control
HDMI inputsHDMI 1.4 · HDMI 1.4 (HDCP 1.4)HDMI 2.0 (ARC, HDCP 2.2) · HDMI 2.0 (HDCP 2.2)
HDMI inputs (count)2Derived2Derived
Newest HDMI versionHDMI 1.4DerivedHDMI 2.0Derived
Other video inputsVGA—
Max input resolutionWUXGA4K UHD
Audio inputs3.5 mm—
USB media playbackNoYes
Control portsRS-232RS-232
Horizontal scan15–102 kHz15–135 kHz
Vertical scan23–120 Hz23–120 Hz
Audio
Speaker power5 W—
Speakers12
LayoutMono—
Tuned byWaves MaxxAudio—
Audio outputs3.5 mm3.5 mm, + Optical, + HDMI ARC
HDMI audio returnNoneDerivedARCDerived
Physical & installation
Dimensions (W × D × H)296 × 224 × 120 mm380 × 263 × 127 mm
Weight2,700 g4,200 g
OrientationsTable, Ceiling, RearTable, Ceiling, Rear
Ceiling mountM4, 20–25 mm screwsM4, 20–25 mm screws
Environment & power
Operating temperature0–40°C0–40°C
Operating humidity10–90%RH10–90%RH
Altitude3,000 m · high-altitude mode—
Power drawMax 355 W · Normal 320 W · Eco 240 WMax 350 W · Normal 340 W · Eco 280 W
StandbyUp to 0.5 WUp to 0.5 W
Mains input100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Noise
Fan noiseNormal 33 dB(A) · Eco 29 dB(A)Normal 30 dB(A) · Eco 28 dB(A)
Safety & compliance
MarksCE—
Support & ownership
Warranty3 yr (light source 1 yr or 2,000 h)3 yr
User manualhttps://esupportdownload.benq.com/esupport/PROJECTOR/UserManual/TH671ST/TH671ST_UM_EN_230426092526.pdfhttps://esupportdownload.benq.com/esupport/PROJECTOR/UserManual/TK850/TK850_UM_EN_191104132736.pdf
Spare parts—Lamp 5J.JKC05.001
In the box
In the boxPower cord, Remote, Quick start guide, + User manual, + VGA cable, Lens capPower cord, Remote, + Remote batteries, Quick start guide, Lens cap
RemoteIRIR · backlit