ProjectorDB

BenQ LK830ST vs ViewSonic LS901-4K

BenQ LK830ST is lighter. ViewSonic LS901-4K is $654 cheaper and brighter.

BenQ LK830ST$2,599 · Amazon
Buy
ViewSonic LS901-4K$1,945 · Amazon
Buy
Key differences
White light outputANSI
4,000 lm ANSI5,500 lm ANSI
Native resolution
1080p (1920 × 1080)—
Throw ratio
0.5:11.2–2.04:1
Lowest input lag
4.2 msDerived—
Fan noise
Normal 30 dB(A) · Eco 24 dB(A)Normal 31 dB(A) · Eco 25 dB(A)
MSRP
$2,499$3,699
Best price
$2,599$1,945
Room fit
Distance to screen
1.1 m2.7–4.5 m
Picture
White light outputANSI
4,000 lm ANSI5,500 lm ANSI
Claimed brightness (non-standard)
—6,000 lm
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in0.65 in
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Pixel shift
XPR 4-way—
Addressable resolution
4K UHD (3840 × 2160)4K UHD (3840 × 2160)
Dynamic contrast
3,000,000:13,000,000:1
Dynamic contrast method
—Light-source dimming
Colour gamut
Rec. 709 93% coverage—
Colour bit depth (per channel)
10 bit10 bit
Gamma / EOTF presets
2.2, 2.4, 2.6—
HDR formats
HDR10, HLGHDR10, HLG
Tone mapping
Adjustable—
Colour management (CMS)
6-axis—
Picture mode memories
2—
3D
YesYes
3D formats
Frame packing, Side-by-side, Top-bottom, Frame sequentialSide-by-side, Top-bottom, Frame sequential
3D glasses sync
—DLP-Link
Light source
Light source
Laser (phosphor)Laser (phosphor)
Light-source life
20,000 h normal · 30,000 h eco20,000 h normal · 30,000 h super eco
Light output control
Continuous—
Optics
Throw ratio
0.5:11.2–2.04:1
Image size
70–300 in30–300 in
Projection offset
114%154%
Zoom
DigitalOptical
Zoom ratio
—1.7×Derived
Focal length
17.51 mm17.63–27.9 mm
Aperture (f-number)
2.82.3–3
Focus
ManualManual
Autofocus
—No
Vertical lens shift
None-21–0%
Horizontal lens shift
None—
Vertical keystone
30°30°
Horizontal keystone
30°30°
Auto keystone
Yes—
Corner correction
4-corner—
Grid warp
YesYes
Interchangeable lens
No—
Motion & gaming
Max input refresh
1080p: 120 Hz · 240 Hz · 4K UHD: 60 Hz1080p: 240 Hz · 2560 × 1440: 120 Hz · 4K UHD: 60 Hz
Input lag
1080p: 60 Hz 16.7 ms · 120 Hz 8.3 ms · 240 Hz 4.2 ms · 4K UHD: 60 Hz 16.7 ms—
Inputs & control
HDMI inputs
2 × HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0 (HDCP 2.3)
Max input resolution
4K UHD4K UHD
USB media playback
—No
Control ports
RS-232RS-232
Control-system drivers
AMXCrestron
Horizontal scan
15–135 kHz15–255 kHz
Vertical scan
23–240 Hz23–240 Hz
Smart platform
Wi-Fi
None—
Ethernet
YesYes
Audio
Speaker power
15 W30 W
Speakers
12
Layout
Mono—
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
279 × 229 × 121 mm337 × 280 × 132 mm
Weight
3,600 g4,850 g
Colours
BlackWhite
Orientations
Ceiling, RearTable, Ceiling, Rear
Ceiling mount
M4—
Dust filter
—None
Ingress protection
IP6X (light engine)—
Sealed optical engine
YesYes
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–80%RH10–80%RH
Altitude
3,000 m · high-altitude mode3,658 m · high-altitude mode
Power draw
Max 250 W · Normal 230 W · Eco 130 W245 W
Standby
Up to 0.5 WUp to 0.5 W
Networked standby
Up to 2 W—
Power supply
External adapter—
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
DC input
24 V—
Fan noise
Normal 30 dB(A) · Eco 24 dB(A)Normal 31 dB(A) · Eco 25 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
Hazard distance
—1 m
Marks
—CE, FCC
Warranty
3 yr3 yr
User manual
https://www.audiogeneral.com/BenQ/LK830ST/LK830ST_LH830ST_LW830ST_User_Manual.pdfhttps://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS901HD_LS901-4K/LS901HD_LS901-4K_UG_ENG.pdf
In the box
In the box
Power cord, Power adapter, Remote, Remote batteries, Quick start guide, Warranty cardPower cord, Remote, Remote batteries, Quick start guide
Remote
BacklitIR
BenQ LK830ST$2,599 · Amazon
Buy
ViewSonic LS901-4K$1,945 · Amazon
Buy