Optoma ZH340ST vs Optoma ZK430ST

Optoma ZH340ST is lighter. Optoma ZK430ST is $180.70 cheaper, better for gaming and in stock.

	Optoma ZH340STMSRP $2,279	Optoma ZK430ST$2,098.30 · Amazon Buy

Key differences
Native resolution
Native resolution	1080p (1920 × 1080)	—
Lowest input lag
Lowest input lag	8.6 msDerived	4.4 msDerived
Fan noise
Fan noise	Max 34 dB(A) · Normal 32 dB(A)	Max 35 dB(A)
MSRP
MSRP	$2,279	$5,199
Best price
Best price	—	$2,098.30
Room fit80″100″120″150″
Distance to screen
Distance to screen	1.1 m	1.1 m
Picture
Claimed brightness (non-standard)
Claimed brightness (non-standard)	3,200 lm	3,700 lm
Brightness uniformity
Brightness uniformity	75%	75%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	0.65 in
Native resolution
Native resolution	1080p (1920 × 1080)	—
Native aspect
Native aspect	16:9Derived	16:9Derived
Addressable resolution
Addressable resolution	—	4K UHD (3840 × 2160)
Dynamic contrast
Dynamic contrast	1,800,000:1	300,000:1
Gamma / EOTF presets
Gamma / EOTF presets	—	2.2, 2.4
HDR formats
HDR formats	HDR10, HLG	HDR10, HLG
Colour management (CMS)
Colour management (CMS)	—	6-axis
3D
3D	Yes	Yes
3D formats
3D formats	—	Frame sequential
3D glasses sync
3D glasses sync	DLP-Link	DLP-Link
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Light-source life
Light-source life	30,000 h	30,000 h
Light output control
Light output control	Steps	Steps
Optics
Throw ratio
Throw ratio	0.5:1	0.5:1
Image size
Image size	30–300 in	36–300 in
Projection offset
Projection offset	116%	116%
Zoom
Zoom	None	None
Focal length
Focal length	7.51 mm	7.51 mm
Aperture (f-number)
Aperture (f-number)	2.8	2.8
Focus
Focus	—	Manual
Vertical lens shift
Vertical lens shift	None	—
Vertical keystone
Vertical keystone	30°	15°
Horizontal keystone
Horizontal keystone	30°	15°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	4-corner	4-corner
Grid warp
Grid warp	—	Yes
Motion & gaming
Max input refresh
Max input refresh	—	1080p: 240 Hz
Input lag
Input lag	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 17 ms	1080p: 240 Hz 4.4 ms
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.0	2 × HDMI 2.0
Max input resolution
Max input resolution	—	DCI 4K
Control ports
Control ports	RS-232	RS-232
Control-system drivers
Control-system drivers	—	AMX
Horizontal scan
Horizontal scan	15–140 kHz	15–140 kHz
Vertical scan
Vertical scan	24–120 Hz	24–240 Hz
Smart platform
Ethernet
Ethernet	—	Yes
Audio
Speaker power
Speaker power	15 W	15 W
Speakers
Speakers	1	1
Audio outputs
Audio outputs	3.5 mm	3.5 mm
HDMI audio return
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	274 × 216 × 114 mm	274 × 216 × 114 mm
Weight
Weight	2,998 g	3,200 g
Colours
Colours	—	White
Orientations
Orientations	Portrait, 360°	Portrait, 360°
Ceiling mount
Ceiling mount	M4, screws ≥ 10 mm	M4, screws ≥ 10 mm
Ingress protection
Ingress protection	IP6X	IP6X
Environment & power
Operating temperature
Operating temperature	0–40°C	0–40°C
Altitude
Altitude	2,500 m	762 m
Power draw
Power draw	Max 139 W · Eco 98 W	Max 185 W · Eco 126 W
Standby
Standby	Up to 0.5 W	Up to 0.5 W
Networked standby
Networked standby	—	Up to 2 W
Power supply
Power supply	External adapter	External adapter
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Fan noise
Fan noise	Max 34 dB(A) · Normal 32 dB(A)	Max 35 dB(A)
Safety & support
Laser class
Laser class	Class 1	Class 1
Risk group
Risk group	RG2	RG2
FDA laser notice
FDA laser notice	Notice 57	Notice 57
Marks
Marks	—	FCC
Warranty
Warranty	1 yr (light source 5 yr or 12,000 h)	1 yr (light source 5 yr or 12,000 h)
User manual
User manual	—	https://region-resource.optoma.com/products/import/Documents/cbd58627-8cc5-43de-9633-fa24cd20bd45.pdf
In the box
In the box
In the box	Power cord, Remote, Remote batteries, Quick start guide	Power cord, Remote, Remote batteries, User manual
Remote
Remote	—	IR

Optoma ZH340STMSRP $2,279

Optoma ZK430ST$2,098.30 · Amazon

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