Epson EX3290 vs Optoma ZK431ST

Epson EX3290 is lighter and in stock. Optoma ZK431ST is quieter.

	Epson EX3290$479.99 · Amazon Buy	Optoma ZK431ST

Key differences
White light output
White light output	4,000 lm ISO	—
Native resolution
Native resolution	WXGA (1280 × 800)	—
Throw ratio
Throw ratio	1.44:1	0.5:1
Lowest input lag
Lowest input lag	—	8.6 msDerived
Light source
Light source	Lamp	Laser (phosphor)
Fan noise
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	Normal 35 dB(A) · Eco 29 dB(A)
MSRP
MSRP	$649.99	—
Best price
Best price	$479.99	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.1 m	1.1 m
Picture
White light output
White light output	4,000 lm ISO	—
Colour light output
Colour light output	4,000 lm	—
Claimed brightness (non-standard)
Claimed brightness (non-standard)	—	4,100 lm
Brightness uniformity
Brightness uniformity	—	75%
Imaging technology
Imaging technology	3LCD	DLP
Chip / panel diagonal
Chip / panel diagonal	0.59 in	—
Native resolution
Native resolution	WXGA (1280 × 800)	—
Native aspect
Native aspect	16:10Derived	16:9Derived
Pixel shift
Pixel shift	None	—
Addressable resolution
Addressable resolution	—	4K UHD (3840 × 2160)
Dynamic contrast
Dynamic contrast	Up to 16,000:1	2,000,000:1
Gamma / EOTF presets
Gamma / EOTF presets	—	2.2, 2.4
3D
3D	—	Yes
3D formats
3D formats	—	Frame packing, Side-by-side, Top-bottom
3D glasses sync
3D glasses sync	—	DLP-Link
Light source
Light source
Light source	Lamp	Laser (phosphor)
Lamp power
Lamp power	210 W	—
Replacement lamp
Replacement lamp	ELPLP97	—
Light-source life
Light-source life	6,000 h normal · 12,000 h eco	30,000 h eco
Optics
Throw ratio
Throw ratio	1.44:1	0.5:1
Image size
Image size	33–375 in	30–300 in
Projection offset
Projection offset	—	114%
Zoom
Zoom	Digital	None
Focal length
Focal length	16.7 mm	7.51 mm
Aperture (f-number)
Aperture (f-number)	1.44	2.8
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	—
Vertical keystone
Vertical keystone	30°	15°
Horizontal keystone
Horizontal keystone	30°	15°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	—	4-corner
Grid warp
Grid warp	—	Yes
Motion & gaming
Input lag
Input lag	—	1080p: 60 Hz 16.7 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.7 ms
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI	2 × HDMI 2.0
Other video inputs
Other video inputs	None	—
Max input resolution
Max input resolution	WUXGA	4K UHD
Control ports
Control ports	None	RS-232, 12 V trigger
Horizontal scan
Horizontal scan	—	15–150 kHz
Vertical scan
Vertical scan	—	24–240 Hz
Smart platform
Wi-Fi
Wi-Fi	None	—
Ethernet
Ethernet	—	Yes
Audio
Speaker power
Speaker power	2 W	15 W
Speakers
Speakers	1	1
Layout
Layout	Mono	—
Audio outputs
Audio outputs	—	3.5 mm
HDMI audio return
HDMI audio return	—	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	302 × 234 × 77 mm	274 × 216 × 109 mm
Weight
Weight	2,500 g	2,900 g
Orientations
Orientations	Table, Ceiling, Rear	360°
Ceiling mount
Ceiling mount	M4, 9 mm screws	M4, screws ≥ 10 mm
Dust filter
Dust filter	Replaceable	—
Environment & power
Operating temperature
Operating temperature	5–40°C	0–40°C
Altitude
Altitude	3,048 m	3,048 m
Power draw
Power draw	349 W	Max 178 W · Eco 125 W
Standby
Standby	0.3 W	Up to 0.5 W
Power supply
Power supply	—	External adapter
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
DC input
DC input	—	19.5 V
Fan noise
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	Normal 35 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Laser class	—	Class 1
Risk group
Risk group	RG2	RG2
Hazard distance
Hazard distance	—	1 m
FDA laser notice
FDA laser notice	—	Notice 57
Marks
Marks	FCC	FCC
Warranty
Warranty	🇺🇸 US 1 yr (light source 3 mo) · 🇨🇦 CA 1 yr	5 yr
User manual
User manual	https://files.support.epson.com/docid/cpd6/cpd65860/EN/index.html	—
In the box
In the box
In the box	Power cord, Remote, Remote batteries, Quick start guide	Power cord, Remote, Remote batteries, Quick start guide

Epson EX3290$479.99 · Amazon

Buy

Optoma ZK431ST