ProjectorDB

BenQ LH830ST vs Optoma ZK420UST

BenQ LH830ST is lighter and in stock. Optoma ZK420UST is better for gaming.

BenQ LH830ST$1,999.99 · Amazon
Buy
Optoma ZK420UST
Key differences
White light outputANSI
4,000 lm ANSI4,200 lm ANSI
Native resolution
1080p (1920 × 1080)—
Throw ratio
0.5:10.25:1
Lowest input lag
16.7 msDerived4.3 msDerived
Fan noise
Normal 30 dB(A) · Eco 24 dB(A)Max 34 dB(A) · Eco 29 dB(A)
MSRP
$1,999—
Best price
$1,999.99—
Room fit
Distance to screen
1.1 m0.55 m
Picture
White light outputANSI
4,000 lm ANSI4,200 lm ANSI
Brightness uniformity
—75%
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in—
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Pixel shift
—XPR 4-way
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
3,000,000:1500,000:1
Colour gamut
Rec. 709 93% coverage—
Colour bit depth (per channel)
10 bit—
Gamma / EOTF presets
—2.2, 2.4
HDR formats
HDR10, HLGHDR10, HLG
3D
—Yes
3D formats
—Frame packing, Side-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 eco30,000 h eco
Light output control
—Steps
Optics
Throw ratio
0.5:10.25:1
Image size
70–300 in100–150 in
Projection offset
116%120%
Zoom
NoneNone
Focal length
17.51 mm3.7 mm
Aperture (f-number)
2.82.44
Focus
—Manual
Vertical keystone
30°—
Horizontal keystone
30°—
Auto keystone
Yes—
Corner correction
4-corner4-corner
Grid warp
—Yes
Interchangeable lens
—No
Motion & gaming
Input lag
1080p: 60 Hz 16.7 ms1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4.3 ms · 4K UHD: 60 Hz 16.9 ms
Inputs & control
HDMI inputs
2 × HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0
Other video inputs
—HDBaseT
Max input resolution
4K UHD4K UHD
Control ports
RS-232RS-232
Horizontal scan
15–135 kHz15–150 kHz
Vertical scan
23–120 Hz24–240 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
15 W15 W
Speakers
11
Layout
—Mono
Audio outputs
3.5 mm3.5 mm, HDMI eARC
HDMI audio return
NoneDerivedeARCDerived
Physical & installation
Dimensions (W × D × H)
279 × 229 × 121 mm327 × 328 × 110 mm
Weight
3,400 g4,200 g
Orientations
Table, Ceiling, RearPortrait, 360°
Ceiling mount
M4M4, 10 mm screws
Ingress protection
IP6X (light engine)IP6X
Sealed optical engine
Yes—
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–80%RH10–85%RH
Altitude
3,000 m · high-altitude mode3,048 m · high-altitude mode
Power draw
Max 250 W · Normal 230 W · Eco 130 WMax 255 W · Eco 180 W
Standby
Up to 0.5 W0.5 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)Max 34 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
FDA laser notice
—Notice 57
Marks
—FCC
Warranty
3 yr3 yr (light source 5 yr or 12,000 h)
User manual
https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20BUSINESS/UserManual/LH830ST/UM_EN_251023092502.pdf—
In the box
In the box
Power cord, Power adapter, Remote, Remote batteries, Quick start guide, Warranty cardPower cord, Power adapter, Remote, Remote batteries, Quick start guide
Remote
—IR
BenQ LH830ST$1,999.99 · Amazon
Buy
Optoma ZK420UST