ProjectorDB

InFocus IN1048SL vs ViewSonic LS901-4K

ViewSonic LS901-4K is better for gaming and lighter.

InFocus IN1048SL$1,921.19 · Amazon
Buy
ViewSonic LS901-4K$1,945 · Amazon
Buy
Key differences
White light output
6,000 lm ISO5,500 lm ANSI
Native resolution
1080p (1920 × 1080)—
Throw ratio
1.4–2.24:11.2–2.04:1
HDR formats
—HDR10, HLG
Light source
—Laser (phosphor)
Fan noise
Normal 30 dB(A) · Eco 28 dB(A)Normal 31 dB(A) · Eco 25 dB(A)
MSRP
—$3,699
Best price
$1,921.19$1,945
Room fit
Distance to screen
3.1–5.0 m2.7–4.5 m
Picture
White light output
6,000 lm ISO5,500 lm ANSI
Claimed brightness (non-standard)
—6,000 lm
Brightness uniformity
85%—
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in0.65 in
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
2,000,000:13,000,000:1
Dynamic contrast method
—Light-source dimming
Colour bit depth (per channel)
10 bit10 bit
Gamma / EOTF presets
2.2, 2.4, 2.6—
HDR formats
—HDR10, HLG
Colour management (CMS)
6-axis—
3D
YesYes
3D formats
Side-by-side, Top-bottom, Frame sequentialSide-by-side, Top-bottom, Frame sequential
3D glasses sync
DLP-LinkDLP-Link
Light source
Light source
—Laser (phosphor)
Emitter
Blue 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
1.4–2.24:11.2–2.04:1
Image size
20–300 in30–300 in
Projection offset
103%154%
Zoom
OpticalOptical
Zoom ratio
1.6×Derived1.7×Derived
Focal length
20.91–32.62 mm17.63–27.9 mm
Aperture (f-number)
—2.3–3
Focus
ManualManual
Autofocus
NoNo
Vertical lens shift
0–15%-21–0%
Motorised lens shift
No—
Vertical keystone
30°30°
Horizontal keystone
30°30°
Auto keystone
Yes—
Corner correction
4-corner—
Grid warp
—Yes
Motion & gaming
Max input refresh
1080p: 120 Hz · 4K UHD: 60 Hz1080p: 240 Hz · 2560 × 1440: 120 Hz · 4K UHD: 60 Hz
Inputs & control
HDMI inputs
HDMI 2.0 · HDMI 1.42 × HDMI 2.0 (HDCP 2.3)
Other video inputs
VGA, HDBaseT—
Max input resolution
DCI 4K4K UHD
USB media playback
—No
Control ports
RS-232RS-232
Control-system drivers
—Crestron
Horizontal scan
15.38–91.15 kHz15–255 kHz
Vertical scan
24–120 Hz23–240 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
10 W30 W
Speakers
12
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
374 × 302 × 117 mm337 × 280 × 132 mm
Weight
5,500 g4,850 g
Colours
—White
Orientations
Table, Ceiling, RearTable, Ceiling, Rear
Dust filter
NoneNone
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 · high-altitude mode
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 31 dB(A) · Eco 25 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
Hazard distance
—1 m
Marks
CE, FCC, CCCCE, FCC
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/LS901HD_LS901-4K/LS901HD_LS901-4K_UG_ENG.pdf
In the box
In the box
Power cord, Remote, Quick start guide, VGA cable, Lens capPower cord, Remote, Remote batteries, Quick start guide
Remote
IRIR
InFocus IN1048SL$1,921.19 · Amazon
Buy
ViewSonic LS901-4K$1,945 · Amazon
Buy