Optoma ZH400 vs ViewSonic LS710HD

Optoma ZH400 is lighter.

	Optoma ZH400MSRP $1,499	ViewSonic LS710HD

Key differences
White light output
White light output	—	4,200 lm ANSI
Throw ratio
Throw ratio	1.48–1.62:1	0.49:1
Lowest input lag
Lowest input lag	8.6 msDerived	—
HDR formats
HDR formats	HDR10, HLG	—
Fan noise
Fan noise	Max 32 dB(A) · Normal 27 dB(A)	—
MSRP
MSRP	$1,499	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.3–3.6 m	1.1 m
Picture
White light output
White light output	—	4,200 lm ANSI
Claimed brightness (non-standard)
Claimed brightness (non-standard)	4,000 lm	—
Brightness uniformity
Brightness uniformity	75%	—
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	—
Native resolution
Native resolution	1080p (1920 × 1080)	1080p (1920 × 1080)
Native aspect
Native aspect	16:9Derived	16:9Derived
Dynamic contrast
Dynamic contrast	2,000,000:1	3,000,000:1
Colour bit depth (per channel)
Colour bit depth (per channel)	—	10 bit
HDR formats
HDR formats	HDR10, HLG	—
Colour management (CMS)
Colour management (CMS)	6-axis	—
3D
3D	Yes	Yes
3D formats
3D formats	Frame packing, Side-by-side, Top-bottom, Frame sequential	Side-by-side, Top-bottom, Frame sequential
3D glasses sync
3D glasses sync	DLP-Link	DLP-Link
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Emitter
Emitter	—	Blue laser + phosphor
Light-source life
Light-source life	Up to 30,000 h max	20,000 h normal · 30,000 h dynamic
Optics
Throw ratio
Throw ratio	1.48–1.62:1	0.49:1
Image size
Image size	20–300 in	40–300 in
Projection offset
Projection offset	116%	—
Zoom
Zoom	Optical	None
Zoom ratio
Zoom ratio	1.09×Derived	—
Focal length
Focal length	12.81–16.74 mm	—
Aperture (f-number)
Aperture (f-number)	2.5–2.67	—
Focus
Focus	Manual	Manual
Vertical lens shift
Vertical lens shift	None	None
Horizontal lens shift
Horizontal lens shift	None	None
Vertical keystone
Vertical keystone	30°	15°
Horizontal keystone
Horizontal keystone	30°	15°
Auto keystone
Auto keystone	Yes	Yes
Corner correction
Corner correction	4-corner	4-corner
Interchangeable lens
Interchangeable lens	No	No
Motion & gaming
Max input refresh
Max input refresh	1080p: 120 Hz	—
Input lag
Input lag	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 17 ms	—
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.0 (HDCP 2.2)	HDMI (HDCP 2.2) · HDMI (HDCP 1.4)
Max input resolution
Max input resolution	4K UHD	4K UHD
Control ports
Control ports	RS-232	RS-232
Control-system drivers
Control-system drivers	—	Crestron
Horizontal scan
Horizontal scan	15–140 kHz	15–102 kHz
Vertical scan
Vertical scan	24–120 Hz	23–120 Hz
Smart platform
Ethernet
Ethernet	—	Yes
Audio
Speaker power
Speaker power	15 W	30 W
Speakers
Speakers	1	2
Layout
Layout	—	Stereo
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	337 × 265 × 132 mm
Weight
Weight	3,000 g	4,500 g
Orientations
Orientations	Table, Ceiling, Rear, Portrait, 360°	Table, Ceiling, Rear, Portrait, 360°
Ceiling mount
Ceiling mount	M4, screws ≥ 10 mm	M4, screws ≤ 10 mm
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	—	10–80%RH
Altitude
Altitude	2,500 m · high-altitude mode	3,658 m · high-altitude mode
Power draw
Power draw	Max 139 W · Eco 88 W	245 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	Max 32 dB(A) · Normal 27 dB(A)	—
Safety & support
Laser class
Laser class	Class 1	—
Risk group
Risk group	RG2	RG2
FDA laser notice
FDA laser notice	Notice 57	—
Marks
Marks	FCC	FCC
Warranty
Warranty	3 yr (light source 5 yr or 12,000 h)	3 yr (light source 1 yr)
User manual
User manual	https://region-resource.optoma.com/products/import/Documents/883be603-99a2-4b9e-96fe-36fe3f4eae3e.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS751HD/LS710HD_LS751HD_UG_ENG.pdf
In the box
In the box
In the box	Power cord, Power adapter, Remote, User manual	Power cord, Remote, Remote batteries, Quick start guide
Remote
Remote	IR	IR