ProjectorDB

InFocus IN1048SL vs Optoma ZK551

InFocus IN1048SL is brighter and quieter. Optoma ZK551 is better for gaming and lighter.

InFocus IN1048SL$1,921.19 · Amazon
Buy
Optoma ZK551$1,899 · Amazon
Buy
Key differences
White light outputISO
6,000 lm ISO5,100 lm ISO
Native resolution
1080p (1920 × 1080)—
Lowest input lag
—4.4 msDerived
Light source
—Laser (phosphor)
Fan noise
Normal 30 dB(A) · Eco 28 dB(A)Normal 34 dB(A) · Eco 28 dB(A)
Best price
$1,921.19$1,899
Room fit
Distance to screen
3.1–5.0 m3.1–5.0 m
Picture
White light outputISO
6,000 lm ISO5,100 lm ISO
Brightness uniformity
85%75%
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in—
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Pixel shift
—XPR 4-way
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
2,000,000:13,000,000:1
Colour bit depth (per channel)
10 bit—
Gamma / EOTF presets
2.2, 2.4, 2.62.2, 2.4
Colour management (CMS)
6-axis6-axis
3D
YesYes
3D formats
Side-by-side, Top-bottom, Frame sequentialFrame packing, 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 LaserDuraCore
Light-source life
Up to 30,000 h30,000 h eco
Light output control
Steps—
Constant brightness mode
—Yes
Cool-down time
—90 s
Optics
Throw ratio
1.4–2.24:11.4–2.24:1
Image size
20–300 in20–300 in
Projection offset
103%102%
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
NoNo
Vertical lens shift
0–15%0–15.1%
Motorised lens shift
No—
Vertical keystone
30°30°
Horizontal keystone
30°30°
Auto keystone
Yes—
Corner correction
4-corner—
Grid warp
—Yes
Interchangeable lens
—No
Motion & gaming
Max input refresh
1080p: 120 Hz · 4K UHD: 60 Hz1080p: 240 Hz · 4K UHD: 60 Hz
Input lag
—1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4.4 ms · 4K UHD: 60 Hz 17 ms
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
Control ports
RS-232RS-232, 12 V trigger
PJLink
—Class 1
Control-system drivers
—Crestron
Horizontal scan
15.38–91.15 kHz15–150 kHz
Vertical scan
24–120 Hz24–240 Hz
Smart platform
Ethernet
YesYes
Casting
—Miracast
Audio
Speaker power
10 W15 W
Speakers
11
Layout
—Mono
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
374 × 302 × 117 mm274 × 216 × 114 mm
Weight
5,500 g3,500 g
Orientations
Table, Ceiling, RearTable, Ceiling, Rear, Portrait, 360°
Ceiling mount
—M4, 10 mm screws
Dust filter
None—
Ingress protection
—IP6XPreliminary
Environment & power
Operating temperature
5–40°C0–40°C
Operating humidity
10–85%RH—
Altitude
3,048 m · high-altitude mode3,048 m · high-altitude mode
Power draw
Max 341 W · Eco 190 WMax 245 W · Normal 245 W · Eco 170 W
Standby
Up to 0.5 WUp to 0.5 W
Networked standby
Up to 2 W—
Power supply
—External adapterPreliminary
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Normal 30 dB(A) · Eco 28 dB(A)Normal 34 dB(A) · Eco 28 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
Marks
CE, FCC, CCCFCC
Warranty
5 yr or 20,000 h—
User manual
https://cdn.infocus.com/2026/06/UG_Authentic-I_IN1048SL_49SL_EN-v2.pdfhttps://region-resource.optoma.com/products/documents/K5mU9Peeq4zSbamp55pR5XFag9nk3bx7MMN5DCWz.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
Optoma ZK551$1,899 · Amazon
Buy