ProjectorDB

ViewSonic LS751HD vs ViewSonic LSD400HD-ST

ViewSonic LS751HD is brighter. ViewSonic LSD400HD-ST is $517 cheaper, lighter and in stock.

ViewSonic LS751HDMSRP $1,599
ViewSonic LSD400HD-ST$1,082 · Amazon
Buy
Key differences
White light outputANSI
5,000 lm ANSI4,000 lm ANSI
Throw ratio
1.4–2.24:10.49–0.5:1
HDR formats
—HDR10, HLG
Fan noise
Normal 32 dB(A) · Eco 29 dB(A)Normal 32 dB(A) · Eco 27 dB(A)
MSRP
$1,599$1,099.99
Best price
—$1,082
Room fit
Distance to screen
3.1–5.0 m1.1 m
Picture
White light outputANSI
5,000 lm ANSI4,000 lm ANSI
Claimed brightness (non-standard)
5,500 lm4,800 lm
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
3,000,000:13,000,000:1
Colour bit depth (per channel)
10 bit10 bit
HDR formats
—HDR10, HLG
3D
YesYes
3D formats
—Frame packing, Side-by-side, Top-bottom
3D glasses sync
DLP-LinkDLP-Link
Light source
Light source
Laser (phosphor)Laser (phosphor)
Emitter
Blue laser + phosphorBlue laser + phosphor
Light-source life
20,000 h normal · 30,000 h super eco20,000 h normal · 30,000 h eco
Optics
Throw ratio
1.4–2.24:10.49–0.5:1
Image size
30–300 in40–300 in
Projection offset
136%132%
Zoom
OpticalNone
Zoom ratio
1.6×Derived—
Focal length
20.91–32.62 mm7.51 mm
Aperture (f-number)
2.5–3.262.8
Focus
ManualManual
Autofocus
—No
Vertical lens shift
-18–0%—
Vertical keystone
30°15°
Horizontal keystone
30°15°
Corner correction
—4-corner
Inputs & control
HDMI inputs
HDMI 2.0 (HDCP 2.2) · HDMI 1.4 (HDCP 1.4)2 × HDMI 2.0 (HDCP 2.2)
Max input resolution
4K UHD4K UHD
Control ports
RS-232RS-232
Control-system drivers
CrestronCrestron
Horizontal scan
15–102 kHz15–135 kHz
Vertical scan
23–120 Hz24–120 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
—15 W
Speakers
—1
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
337 × 265 × 132 mm286 × 216 × 129 mm
Weight
4,500 g3,100 g
Orientations
Table, Ceiling, Rear, Portrait, 360°Table, Ceiling, Rear, Portrait, 360°
Dust filter
—None
Ingress protection
IP5X (light engine)IP6X
Sealed optical engine
YesYes
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–80%RH10–80%RH
Altitude
3,658 m3,658 m · high-altitude mode
Power draw
245 W143 W
Standby
Up to 0.5 WUp to 0.5 W
Power supply
—External adapter
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Normal 32 dB(A) · Eco 29 dB(A)Normal 32 dB(A) · Eco 27 dB(A)
Safety & support
Laser class
—Class 1
Risk group
—RG2
Marks
FCCCE, FCC
Warranty
3 yr3 yr
User manual
https://www.viewsonicglobal.com/public/products_download/user_guide/projector/LS751HD/LS710HD_LS751HD_UG_ENG.pdfhttps://www.viewsonicglobal.com/public/products_download/user_guide/projector/LSD400HD-ST/LSD400HD-ST_UG_ENG.pdf
In the box
In the box
Power cord, Remote, Quick start guidePower cord, Power adapter, Remote, Remote batteries, Quick start guide
Remote
IRIR
ViewSonic LS751HDMSRP $1,599
ViewSonic LSD400HD-ST$1,082 · Amazon
Buy