InFocus INL168 vs Optoma ZK431ST

InFocus INL168 is quieter.

	InFocus INL168	Optoma ZK431ST

Key differences
Native resolution
Native resolution	1080p (1920 × 1080)	—
Throw ratio
Throw ratio	1.48–1.62:1	0.5:1
Lowest input lag
Lowest input lag	—	8.6 msDerived
Fan noise
Fan noise	Normal 30 dB(A) · Eco 28 dB(A)	Normal 35 dB(A) · Eco 29 dB(A)
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.3–3.6 m	1.1 m
Picture
Claimed brightness (non-standard)
Claimed brightness (non-standard)	4,000 lm	4,100 lm
Brightness uniformity
Brightness uniformity	85%	75%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.47 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	3,500,000:1	2,000,000:1
Gamma / EOTF presets
Gamma / EOTF presets	—	2.2, 2.4
3D
3D	Yes	Yes
3D formats
3D formats	Side-by-side, Top-bottom, Frame sequential	Frame packing, Side-by-side, Top-bottom
3D glasses sync
3D glasses sync	—	DLP-Link
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Emitter
Emitter	Blue laser + phosphor	—
Light engine
Light engine	Quantum Laser	—
Light-source life
Light-source life	30,000 h max	30,000 h eco
Light output control
Light output control	Steps	—
Warm-up time
Warm-up time	10 s	—
Cool-down time
Cool-down time	100 s	—
Optics
Throw ratio
Throw ratio	1.48–1.62:1	0.5:1
Image size
Image size	—	30–300 in
Projection offset
Projection offset	116%	114%
Zoom
Zoom	Optical	None
Zoom ratio
Zoom ratio	1.09×Derived	—
Focal length
Focal length	12.81–16.74 mm	7.51 mm
Aperture (f-number)
Aperture (f-number)	2.5–2.67	2.8
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	—
Vertical lens shift
Vertical lens shift	None	—
Horizontal lens shift
Horizontal lens shift	None	—
Vertical keystone
Vertical keystone	30°	15°
Horizontal keystone
Horizontal keystone	—	15°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	—	4-corner
Grid warp
Grid warp	—	Yes
Interchangeable lens
Interchangeable lens	No	—
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 1.4	2 × HDMI 2.0
Other video inputs
Other video inputs	VGA, Composite	—
Max input resolution
Max input resolution	1080p	4K UHD
Audio inputs
Audio inputs	3.5 mm	—
USB media playback
USB media playback	No	—
Control ports
Control ports	RS-232	RS-232, 12 V trigger
Horizontal scan
Horizontal scan	15–100 kHz	15–150 kHz
Vertical scan
Vertical scan	24–120 Hz	24–240 Hz
Smart platform
Ethernet
Ethernet	No	Yes
Audio
Speaker power
Speaker power	15 W	15 W
Speakers
Speakers	1	1
Layout
Layout	Mono	—
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)	216 × 278 × 116 mm	274 × 216 × 109 mm
Weight
Weight	2,900 g	2,900 g
Orientations
Orientations	Table, Ceiling, Rear, Portrait, 360°	360°
Ceiling mount
Ceiling mount	—	M4, screws ≥ 10 mm
Dust filter
Dust filter	None	—
Ingress protection
Ingress protection	IP6X	—
Sealed optical engine
Sealed optical engine	Yes	—
Environment & power
Operating temperature
Operating temperature	0–40°C	0–40°C
Operating humidity
Operating humidity	0–85%RH	—
Altitude
Altitude	3,048 m	3,048 m
Power draw
Power draw	Max 139 W	Max 178 W · Eco 125 W
Standby
Standby	Up to 0.5 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 30 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
Hazard distance
Hazard distance	—	1 m
FDA laser notice
FDA laser notice	—	Notice 57
Marks
Marks	CE, FCC, CCC	FCC
Warranty
Warranty	—	5 yr
User manual
User manual	https://cdn.infocus.com/2024/08/Quantum-Laser_Core_CoreII_Superior-Series_EN.pdf	—
In the box
In the box
In the box	Power adapter, Remote, Quick start guide, HDMI cable	Power cord, Remote, Remote batteries, Quick start guide
Remote
Remote	IR	—