ProjectorDB

InFocus IN1048SL vs ViewSonic LS751HD

InFocus IN1048SL is quieter and in stock. ViewSonic LS751HD is $322.19 cheaper and lighter.

InFocus IN1048SL$1,921.19 · Amazon
Buy
ViewSonic LS751HDMSRP $1,599
Key differences
White light output
6,000 lm ISO5,000 lm ANSI
Light source
—Laser (phosphor)
Fan noise
Normal 30 dB(A) · Eco 28 dB(A)Normal 32 dB(A) · Eco 29 dB(A)
MSRP
—$1,599
Best price
$1,921.19—
Room fit
Distance to screen
3.1–5.0 m3.1–5.0 m
Picture
White light output
6,000 lm ISO5,000 lm ANSI
Claimed brightness (non-standard)
—5,500 lm
Brightness uniformity
85%—
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in0.65 in
Native resolution
1080p (1920 × 1080)1080p (1920 × 1080)
Native aspect
16:9Derived16:9Derived
Dynamic contrast
2,000,000:13,000,000:1
Colour bit depth (per channel)
10 bit10 bit
Gamma / EOTF presets
2.2, 2.4, 2.6—
Colour management (CMS)
6-axis—
3D
YesYes
3D formats
Side-by-side, Top-bottom, Frame sequential—
3D glasses sync
DLP-LinkDLP-Link
Light source
Light source
—Laser (phosphor)
Emitter
Blue laser + phosphorBlue laser + phosphor
Light engine
Quantum Laser—
Light-source life
Up to 30,000 h20,000 h normal · 30,000 h super eco
Light output control
Steps—
Optics
Throw ratio
1.4–2.24:11.4–2.24:1
Image size
20–300 in30–300 in
Projection offset
103%136%
Zoom
OpticalOptical
Zoom ratio
1.6×Derived1.6×Derived
Focal length
20.91–32.62 mm20.91–32.62 mm
Aperture (f-number)
—2.5–3.26
Focus
ManualManual
Autofocus
No—
Vertical lens shift
0–15%-18–0%
Motorised lens shift
No—
Vertical keystone
30°30°
Horizontal keystone
30°30°
Auto keystone
Yes—
Corner correction
4-corner—
Motion & gaming
Max input refresh
1080p: 120 Hz · 4K UHD: 60 Hz—
Inputs & control
HDMI inputs
HDMI 2.0 · HDMI 1.4HDMI 2.0 (HDCP 2.2) · HDMI 1.4 (HDCP 1.4)
Other video inputs
VGA, HDBaseT—
Max input resolution
DCI 4K4K UHD
Control ports
RS-232RS-232
Control-system drivers
—Crestron
Horizontal scan
15.38–91.15 kHz15–102 kHz
Vertical scan
24–120 Hz23–120 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
10 W—
Speakers
1—
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
374 × 302 × 117 mm337 × 265 × 132 mm
Weight
5,500 g4,500 g
Orientations
Table, Ceiling, RearTable, Ceiling, Rear, Portrait, 360°
Dust filter
None—
Ingress protection
—IP5X (light engine)
Sealed optical engine
—Yes
Environment & power
Operating temperature
5–40°C0–40°C
Operating humidity
10–85%RH10–80%RH
Altitude
3,048 m · high-altitude mode3,658 m
Power draw
Max 341 W · Eco 190 W245 W
Standby
Up to 0.5 WUp to 0.5 W
Networked standby
Up to 2 W—
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Normal 30 dB(A) · Eco 28 dB(A)Normal 32 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Class 1—
Risk group
RG2—
Marks
CE, FCC, CCCFCC
Warranty
5 yr or 20,000 h3 yr
User manual
https://cdn.infocus.com/2026/06/UG_Authentic-I_IN1048SL_49SL_EN-v2.pdfhttps://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS751HD/LS710HD_LS751HD_UG_ENG.pdf
In the box
In the box
Power cord, Remote, Quick start guide, VGA cable, Lens capPower cord, Remote, Quick start guide
Remote
IRIR
InFocus IN1048SL$1,921.19 · Amazon
Buy
ViewSonic LS751HDMSRP $1,599