InFocus IN1048SL vs ViewSonic LS740-4K

InFocus IN1048SL is quieter and in stock. ViewSonic LS740-4K is $121.20 cheaper, sharper and better for gaming.

	InFocus IN1048SL$1,921.19 · Amazon Buy	ViewSonic LS740-4K$1,799.99 · Amazon Buy

Key differences
White light output
White light output	6,000 lm ISO	5,000 lm ANSI
Native resolution
Native resolution	1080p (1920 × 1080)	4K UHD (3840 × 2160)
HDR formats
HDR formats	—	HLG
Light source
Light source	—	Laser (phosphor)
Fan noise
Fan noise	Normal 30 dB(A) · Eco 28 dB(A)	Normal 32 dB(A) · Eco 27 dB(A)
MSRP
MSRP	—	$1,799.99
Best price
Best price	$1,921.19	$1,799.99
Room fit80″100″120″150″
Distance to screen
Distance to screen	3.1–5.0 m	3.1–5.0 m
Picture
White light output
White light output	6,000 lm ISO	5,000 lm ANSI
Brightness uniformity
Brightness uniformity	85%	—
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	0.65 in
Native resolution
Native resolution	1080p (1920 × 1080)	4K UHD (3840 × 2160)
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	10 bit
Gamma / EOTF presets
Gamma / EOTF presets	2.2, 2.4, 2.6	—
HDR formats
HDR formats	—	HLG
Colour management (CMS)
Colour management (CMS)	6-axis	—
3D
3D	Yes	Yes
3D formats
3D formats	Side-by-side, Top-bottom, Frame sequential	Frame packing, 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)
Emitter
Emitter	Blue laser + phosphor	Blue laser + phosphor
Light engine
Light engine	Quantum Laser	—
Light-source life
Light-source life	Up to 30,000 h	20,000 h normal · 30,000 h super eco
Light output control
Light output control	Steps	—
Optics
Throw ratio
Throw ratio	1.4–2.24:1	1.4–2.24:1
Image size
Image size	20–300 in	30–300 in
Projection offset
Projection offset	103%	124%
Zoom
Zoom	Optical	Optical
Zoom ratio
Zoom ratio	1.6×Derived	1.6×Derived
Focal length
Focal length	20.91–32.62 mm	—
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	No
Vertical lens shift
Vertical lens shift	0–15%	—
Motorised lens shift
Motorised lens shift	No	—
Vertical keystone
Vertical keystone	30°	30°
Horizontal keystone
Horizontal keystone	30°	30°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	4-corner	—
Grid warp
Grid warp	—	Yes
Motion & gaming
Max input refresh
Max input refresh	1080p: 120 Hz · 4K UHD: 60 Hz	1080p: 240 Hz · 2560 × 1440: 120 Hz · 4K UHD: 60 Hz
Inputs & control
HDMI inputs
HDMI inputs	HDMI 2.0 · HDMI 1.4	2 × HDMI 2.0 (HDCP 2.3)
Other video inputs
Other video inputs	VGA, HDBaseT	—
Max input resolution
Max input resolution	DCI 4K	4K UHD
Control ports
Control ports	RS-232	RS-232
Horizontal scan
Horizontal scan	15.38–91.15 kHz	15–135 kHz
Vertical scan
Vertical scan	24–120 Hz	24–240 Hz
Smart platform
Ethernet
Ethernet	Yes	Yes
Audio
Speaker power
Speaker power	10 W	15 W
Speakers
Speakers	1	1
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)	374 × 302 × 117 mm	286 × 216 × 129 mm
Weight
Weight	5,500 g	3,100 g
Orientations
Orientations	Table, Ceiling, Rear	Table, Ceiling, Portrait, 360°
Dust filter
Dust filter	None	None
Ingress protection
Ingress protection	—	IP6X
Sealed optical engine
Sealed optical engine	—	Yes
Environment & power
Operating temperature
Operating temperature	5–40°C	0–40°C
Operating humidity
Operating humidity	10–85%RH	10–80%RH
Altitude
Altitude	3,048 m · high-altitude mode	3,658 m · high-altitude mode
Power draw
Power draw	Max 341 W · Eco 190 W	165 W
Standby
Standby	Up to 0.5 W	Up to 0.5 W
Networked standby
Networked standby	Up to 2 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)	Normal 32 dB(A) · Eco 27 dB(A)
Safety & support
Laser class
Laser class	Class 1	Class 1
Risk group
Risk group	RG2	RG2
Hazard distance
Hazard distance	—	1 m
Marks
Marks	CE, FCC, CCC	CE, FCC
Warranty
Warranty	5 yr or 20,000 h	3 yr
User manual
User manual	https://cdn.infocus.com/2026/06/UG_Authentic-I_IN1048SL_49SL_EN-v2.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD500-4K/LSD500-4K_LS740-4K_UG_ENG.pdf
In the box
In the box
In the box	Power cord, Remote, Quick start guide, VGA cable, Lens cap	Power cord, Power adapter, Remote, Remote batteries, Quick start guide
Remote
Remote	IR	IR

InFocus IN1048SL$1,921.19 · Amazon

Buy

ViewSonic LS740-4K$1,799.99 · Amazon

Buy