InFocus INL178 vs Optoma ZH451

	InFocus INL178$699.99 · Amazon · Used Buy	Optoma ZH451

Key differences
White light output
White light output	—	4,600 lm ISO
Throw ratio
Throw ratio	1.48–1.62:1	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)
MSRP
MSRP	$1,739	—
Best price
Best price	$699.99	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.3–3.6 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	0.47 in	—
Native resolution
Native resolution	1080p (1920 × 1080)	1080p (1920 × 1080)
Native aspect
Native aspect	16:9Derived	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	1.48–1.62:1	1.4–2.24:1
Image size
Image size	—	30–300 in
Projection offset
Projection offset	116%	116%
Zoom
Zoom	Optical	Optical
Zoom ratio
Zoom ratio	1.09×Derived	1.6×Derived
Focal length
Focal length	12.81–16.74 mm	20.91–32.62 mm
Aperture (f-number)
Aperture (f-number)	2.5–2.67	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	VGA
Max input resolution
Max input resolution	3420 × 2160	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://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	—

InFocus INL178$699.99 · Amazon · Used

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Optoma ZH451