InFocus INL166 vs Optoma ZH451

Optoma ZH451 is sharper.

	InFocus INL166	Optoma ZH451

Key differences
White light output
White light output	—	4,600 lm ISO
Native resolution
Native resolution	WXGA (1280 × 800)	1080p (1920 × 1080)
Throw ratio
Throw ratio	1.54–1.72:1	1.4–2.24:1
Lowest input lag
Lowest input lag	—	8.6 msDerived
Fan noise
Fan noise	Normal 30 dB(A) · Eco 28 dB(A)	Max 31 dB(A) · Eco 29 dB(A)
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.3–3.7 m	3.1–5.0 m
Picture
White light output
White light output	—	4,600 lm ISO
Claimed brightness (non-standard)
Claimed brightness (non-standard)	4,200 lm	—
Brightness uniformity
Brightness uniformity	85%	75%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	—
Native resolution
Native resolution	WXGA (1280 × 800)	1080p (1920 × 1080)
Native aspect
Native aspect	16:10Derived	16:9Derived
Dynamic contrast
Dynamic contrast	3,500,000:1	3,000,000:1
Colour bit depth (per channel)
Colour bit depth (per channel)	—	10 bit
3D
3D	Yes	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	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
Light output control
Light output control	Steps	Steps
Optics
Throw ratio
Throw ratio	1.54–1.72:1	1.4–2.24:1
Image size
Image size	—	30–300 in
Projection offset
Projection offset	112%	116%
Zoom
Zoom	Optical	Optical
Zoom ratio
Zoom ratio	1.12×Derived	1.6×Derived
Focal length
Focal length	21.85–24 mm	20.91–32.62 mm
Aperture (f-number)
Aperture (f-number)	2.41–2.53	2.5–3.26
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	No
Vertical lens shift
Vertical lens shift	None	—
Horizontal lens shift
Horizontal lens shift	None	—
Vertical keystone
Vertical keystone	30°	30°
Horizontal keystone
Horizontal keystone	—	30°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	—	4-corner
Interchangeable lens
Interchangeable lens	No	—
Motion & gaming
Input lag
Input lag	—	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.9 ms
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 1.4	2 × HDMI 2.0
Other video inputs
Other video inputs	VGA, Composite	VGA
Max input resolution
Max input resolution	1080p	4K UHD
Audio inputs
Audio inputs	3.5 mm	3.5 mm
USB media playback
USB media playback	No	—
Control ports
Control ports	RS-232	RS-232, 12 V trigger
PJLink
PJLink	—	Class 2
Control-system drivers
Control-system drivers	—	Crestron, AMX
Horizontal scan
Horizontal scan	15–100 kHz	15–135 kHz
Vertical scan
Vertical scan	24–120 Hz	24–120 Hz
Smart platform
Ethernet
Ethernet	No	Yes
Audio
Speaker power
Speaker power	15 W	15 W
Speakers
Speakers	1	1
Layout
Layout	Mono	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)	278 × 216 × 116 mm	274 × 216 × 114 mm
Weight
Weight	2,900 g	2,998 g
Orientations
Orientations	Table, Ceiling, Rear, Portrait, 360°	Table, Ceiling, Rear, Portrait, 360°
Ceiling mount
Ceiling mount	—	M4, screws ≥ 10 mm
Dust filter
Dust filter	None	—
Ingress protection
Ingress protection	IP6X	IP6X
Environment & power
Operating temperature
Operating temperature	0–40°C	0–40°C
Operating humidity
Operating humidity	0–85%RH	0–80%RH
Altitude
Altitude	3,048 m	2,500 m · high-altitude mode
Power draw
Power draw	Max 139 W	Max 170 W · Eco 120 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
Fan noise
Fan noise	Normal 30 dB(A) · Eco 28 dB(A)	Max 31 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Laser class	—	Class 1
Risk group
Risk group	—	RG2
Marks
Marks	CE, FCC, CCC	FCC
User manual
User manual	https://cdn.infocus.com/2024/08/Quantum-Laser_Core_CoreII_Superior-Series_EN.pdf	https://region-resource.optoma.com/products/documents/mpTwkm9mUWvfsgMhppFmV04EqeoeeRYWmvKy7tBF.pdf
In the box
In the box
In the box	Power adapter, Remote, Quick start guide, HDMI cable	Power cord, Remote, Remote batteries, User manual
Remote
Remote	IR	—