ViewSonic LS740-4K vs ViewSonic LS750WU

ViewSonic LS740-4K is $765.01 cheaper, sharper and lighter.

	ViewSonic LS740-4K$1,799.99 · Amazon Buy	ViewSonic LS750WUMSRP $2,565

Key differences
Native resolution
Native resolution	4K UHD (3840 × 2160)	WUXGA (1920 × 1200)
Throw ratio
Throw ratio	1.4–2.24:1	1.13–1.47:1
HDR formats
HDR formats	HLG	—
Fan noise
Fan noise	Normal 32 dB(A) · Eco 27 dB(A)	—
MSRP
MSRP	$1,799.99	$2,565
Best price
Best price	$1,799.99	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.1–5.0 m	2.4–3.2 m
Picture
White light outputANSI
White light outputANSI	5,000 lm ANSI	5,000 lm ANSI
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	—
Native resolution
Native resolution	4K UHD (3840 × 2160)	WUXGA (1920 × 1200)
Native aspect
Native aspect	16:9Derived	16:10Derived
Dynamic contrast
Dynamic contrast	3,000,000:1	3,000,000:1
Dynamic contrast method
Dynamic contrast method	—	Light-source dimming
Colour bit depth (per channel)
Colour bit depth (per channel)	10 bit	10 bit
HDR formats
HDR formats	HLG	—
Picture mode memories
Picture mode memories	—	2
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	—
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Emitter
Emitter	Blue laser + phosphor	Blue laser + phosphor
Light-source life
Light-source life	20,000 h normal · 30,000 h super eco	20,000 h normal · 20,000 h dynamic
Optics
Throw ratio
Throw ratio	1.4–2.24:1	1.13–1.47:1
Image size
Image size	30–300 in	30–300 in
Projection offset
Projection offset	124%	—
Zoom
Zoom	Optical	Optical
Zoom ratio
Zoom ratio	1.6×Derived	1.3×Derived
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°	40°
Horizontal keystone
Horizontal keystone	30°	40°
Corner correction
Corner correction	—	4-corner
Grid warp
Grid warp	Yes	—
Interchangeable lens
Interchangeable lens	—	No
Motion & gaming
Max input refresh
Max input refresh	1080p: 240 Hz · 2560 × 1440: 120 Hz · 4K UHD: 60 Hz	—
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.0 (HDCP 2.3)	2 × HDMI 1.4 (HDCP 1.4)
Other video inputs
Other video inputs	—	VGA, Composite
Max input resolution
Max input resolution	4K UHD	WUXGA
Audio inputs
Audio inputs	—	3.5 mm, RCA
Control ports
Control ports	RS-232	RS-232, 12 V trigger
Control-system drivers
Control-system drivers	—	Control4, Crestron, AMX
Horizontal scan
Horizontal scan	15–135 kHz	15–102 kHz
Vertical scan
Vertical scan	24–240 Hz	23–120 Hz
Smart platform
Ethernet
Ethernet	Yes	Yes
Audio
Speaker power
Speaker power	15 W	20 W
Speakers
Speakers	1	2
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)	286 × 216 × 129 mm	405 × 305 × 144 mm
Weight
Weight	3,100 g	5,900 g
Orientations
Orientations	Table, Ceiling, Portrait, 360°	Table, Ceiling, Rear, 360°
Ceiling mount
Ceiling mount	—	M4, 12.8–15.8 mm screws
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	10–80%RH	10–90%RH
Altitude
Altitude	3,658 m · high-altitude mode	3,000 m · high-altitude mode
Power draw
Power draw	165 W	460 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 32 dB(A) · Eco 27 dB(A)	—
Safety & support
Laser class
Laser class	Class 1	Class 1
Risk group
Risk group	RG2	—
Hazard distance
Hazard distance	1 m	—
Marks
Marks	CE, FCC	FCC
Warranty
Warranty	3 yr	5 yr or 20,000 h
User manual
User manual	https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS750WU_LS850WU_LS860WU/LS750WU_LS850WU_LS860WU_UG_ENG.pdf
In the box
In the box
In the box	Power cord, Power adapter, Remote, Remote batteries, Quick start guide	Power cord, Remote, Remote batteries, Quick start guide, VGA cable
Remote
Remote	IR	IR

ViewSonic LS740-4K$1,799.99 · Amazon

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ViewSonic LS750WUMSRP $2,565