ProjectorDB

BenQ LH830ST vs Optoma ZK451

Optoma ZK451 is $400.99 cheaper, better for gaming and lighter.

BenQ LH830ST$1,999.99 · Amazon
Buy
Optoma ZK451$1,599 · Amazon
Buy
Key differences
White light output
4,000 lm ANSI4,500 lm ISO
Native resolution
1080p (1920 × 1080)—
Throw ratio
0.5:11.4–2.24:1
Lowest input lag
16.7 msDerived8.6 msDerived
Fan noise
Normal 30 dB(A) · Eco 24 dB(A)Max 35 dB(A) · Eco 29 dB(A)
MSRP
$1,999—
Best price
$1,999.99$1,599
Room fit
Distance to screen
1.1 m3.1–5.0 m
Picture
White light output
4,000 lm ANSI4,500 lm ISO
Brightness uniformity
—75%
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in—
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
3,000,000:12,000,000:1
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
Colour management (CMS)
—6-axis
3D
—Yes
3D formats
—Side-by-side, Top-bottom, Frame sequential
3D glasses sync
—DLP-Link
Light source
Light source
Laser (phosphor)Laser (phosphor)
Emitter
—Blue laser + phosphor
Light-source life
20,000 h normal · 30,000 h eco30,000 h eco
Light output control
—Steps
Cool-down time
—90 s
Optics
Throw ratio
0.5:11.4–2.24:1
Image size
70–300 in30–300 in
Projection offset
116%116%
Zoom
NoneOptical
Zoom ratio
—1.6×Derived
Focal length
17.51 mm20.91–32.62 mm
Aperture (f-number)
2.82.5–3.26
Focus
—Manual
Autofocus
—No
Vertical keystone
30°30°
Horizontal keystone
30°30°
Auto keystone
Yes—
Corner correction
4-corner4-corner
Grid warp
—Yes
Auto setup
—Fit to screen, Obstacle avoidance
Motion & gaming
Input lag
1080p: 60 Hz 16.7 ms1080p: 60 Hz 16.7 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.7 ms
Inputs & control
HDMI inputs
2 × HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0
Max input resolution
4K UHD4K UHD
Control ports
RS-232RS-232
Control-system drivers
—Crestron, AMX
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
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
279 × 229 × 121 mm274 × 216 × 114 mm
Weight
3,400 g2,900 g
Orientations
Table, Ceiling, RearTable, Ceiling, Rear, Portrait, 360°
Ceiling mount
M4M4, screws ≥ 10 mm
Dust filter
—None
Ingress protection
IP6X (light engine)IP6X (light engine)
Sealed optical engine
YesYes
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–80%RH—
Altitude
3,000 m · high-altitude mode3,048 m
Power draw
Max 250 W · Normal 230 W · Eco 130 WMax 178 W · Eco 124 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
Fan noise
Normal 30 dB(A) · Eco 24 dB(A)Max 35 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.pdfhttps://region-resource.optoma.com/products/documents/LaU8Uwg9XFPmrLtSBvohDroL18wojvZr27JsfxCM.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
BenQ LH830ST$1,999.99 · Amazon
Buy
Optoma ZK451$1,599 · Amazon
Buy