Optoma ZH400ST vs Optoma ZK430ST

Optoma ZH400ST is lighter. Optoma ZK430ST is $500.70 cheaper, better for gaming and in stock.

Key differences
Native resolution
1080p (1920 × 1080)—
Lowest input lag
17 msDerived4.4 msDerived
Fan noise
Max 36 dB(A)Max 35 dB(A)
MSRP
$2,599$5,199
Best price
—$2,098.30
Room fit
Distance to screen
1.1 m1.1 m
Picture
Claimed brightness (non-standard)
4,000 lm3,700 lm
Brightness uniformity
75%75%
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in0.65 in
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
2,000,000:1300,000:1
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
YesYes
3D formats
—Frame sequential
3D glasses sync
DLP-LinkDLP-Link
Light source
Light source
Laser (phosphor)Laser (phosphor)
Emitter
Blue laser + phosphor—
Light engine
DuraCore—
Light-source life
30,000 h30,000 h
Light output control
—Steps
Optics
Throw ratio
0.5:10.5:1
Image size
36–292 in36–300 in
Projection offset
116%116%
Zoom
NoneNone
Focal length
7.51 mm7.51 mm
Aperture (f-number)
2.82.8
Focus
—Manual
Vertical lens shift
None—
Horizontal lens shift
None—
Vertical keystone
30°15°
Horizontal keystone
30°15°
Corner correction
—4-corner
Grid warp
—Yes
Motion & gaming
Max input refresh
—1080p: 240 Hz
Input lag
1080p: 60 Hz 33.8 ms · 120 Hz 17 ms1080p: 240 Hz 4.4 ms
Inputs & control
HDMI inputs
2 × HDMI 2.02 × HDMI 2.0
Max input resolution
—DCI 4K
Control ports
RS-232RS-232
PJLink
Class 1—
Control-system drivers
Crestron, AMXAMX
Horizontal scan
15–140 kHz15–140 kHz
Vertical scan
24–120 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)
274 × 216 × 114 mm274 × 216 × 114 mm
Weight
2,998 g3,200 g
Colours
—White
Orientations
Portrait, 360°Portrait, 360°
Ceiling mount
M4, screws ≥ 10 mmM4, screws ≥ 10 mm
Ingress protection
IP6XIP6X
Environment & power
Operating temperature
0–40°C0–40°C
Altitude
2,500 m762 m
Power draw
Max 173 W · Eco 119 WMax 185 W · Eco 126 W
Standby
Up to 0.5 WPreliminaryUp to 0.5 W
Networked standby
—Up to 2 W
Power supply
External adapterExternal adapter
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Max 36 dB(A)Max 35 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
FDA laser notice
Notice 57Notice 57
Marks
—FCC
Warranty
3 yr (light source 5 yr or 12,000 h)1 yr (light source 5 yr or 12,000 h)
User manual
https://region-resource.optoma.com/products/import/Documents/f141af2c-7d8e-4d73-952f-5a86d8e9c891.pdfhttps://region-resource.optoma.com/products/import/Documents/cbd58627-8cc5-43de-9633-fa24cd20bd45.pdf
In the box
In the box
Power cord, Remote, Remote batteries, Quick start guidePower cord, Remote, Remote batteries, User manual
Remote
—IR
Optoma ZK430ST$2,098.30 · Amazon
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