Epson PowerLite 905 vs ViewSonic LS625W

	Epson PowerLite 905	ViewSonic LS625W MSRP $1,389
Key differences
White light output	3,000 lm ISO (Normal power)	3,200 lm ANSI
Native resolution	1024 × 768	WXGA (1280 × 800)
Throw ratio	1.38–2.24:1	0.52:1
Light source	Lamp	Laser (phosphor)
Fan noise	Normal 33 dB(A) · Eco 28 dB(A)	Normal 34 dB(A) · Eco 30 dB(A)
Price	—	MSRP $1,389
Room fit80″100″120″150″
Distance to screen	2.8–4.6 m	1.1 m
Brightness
Rated brightness	3,000 lmDerived	3,200 lmDerived
White light output	3,000 lm ISO (Normal power)	3,200 lm ANSI
Colour light output	3,000 lm (Normal power)	—
Brightness by mode	Normal 3,000 lm · Eco 2,400 lm	—
Eco brightness	80%Derived	—
Display system
Imaging technology	3LCD	DLP
Chip / panel diagonal	—	0.65 in
On-screen resolution	1024 × 768Derived	WXGA (1280 × 800)Derived
Native resolution	1024 × 768	WXGA (1280 × 800)
Native aspect	4:3Derived	16:10Derived
Contrast
Dynamic contrast	2,000:1	100,000:1
Dynamic contrast method	Dynamic iris	—
Colour
Colour bit depth (per channel)	8 bit	10 bit
Calibration
Colour management (CMS)	—	6-axis
3D
3D	No	Yes
3D formats	—	Frame packing, Side-by-side, Top-bottom, Frame sequential
Light source
Light source	Lamp	Laser (phosphor)
Emitter	—	Blue laser + phosphor
Lamp power	200 W	—
Light-source life	5,000 h normal · 6,000 h eco	20,000 h normal · 20,000 h dynamic
Light output control	Steps	Steps
Warm-up time	Up to 30 s	—
Cool-down time	0 s	—
Optics
Throw ratio	1.38–2.24:1	0.52:1
Image size	30–300 in	70–100 in
Zoom	Optical	None
Zoom ratio	1.62×Derived	—
Focal length	18.2–29.2 mm	—
Aperture (f-number)	1.51–1.99	—
Focus	Manual	Manual
Autofocus	No	—
Vertical lens shift	None	None
Horizontal lens shift	None	None
Vertical keystone	30°	40°
Horizontal keystone	30°	40°
Auto keystone	Yes	—
Corner correction	4-corner	—
Interchangeable lens	No	No
Inputs & control
HDMI inputs	HDMI	2 × HDMI 1.4 (HDCP 1.4)
HDMI inputs (count)	1Derived	2Derived
Newest HDMI version	—	HDMI 1.4Derived
Other video inputs	VGA	VGA, + Composite
Max input resolution	WUXGA	WUXGA
Audio inputs	—	3.5 mm
USB media playback	Yes	—
Control ports	RS-232	RS-232, + 12 V trigger
Control-system drivers	Crestron	Crestron, + AMX
Horizontal scan	—	15–102 kHz
Vertical scan	—	23–120 Hz
Smart platform
Ethernet	Yes	Yes
Audio
Speaker power	16 W	20 W
Speakers	—	2
Layout	Mono	Stereo
Audio outputs	3.5 mm	3.5 mm
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)	345 × 263 × 93 mm	383 × 291 × 147 mm
Weight	3,350 g	6,200 g
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Ceiling mount	—	4 × M4, screws ≤ 8 mm
Dust filter	Replaceable	—
Sealed optical engine	—	Yes
Environment & power
Operating temperature	5–35°C	0–40°C
Operating humidity	20–80%RH	0–90%RH
Altitude	2,286 m · high-altitude mode	3,000 m · high-altitude mode
Power draw	Max 313 W · Normal 313 W · Eco 264 W	305 W
Standby	0.29 W	Up to 0.5 W
Networked standby	8.9 W	—
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Noise
Fan noise	Normal 33 dB(A) · Eco 28 dB(A)	Normal 34 dB(A) · Eco 30 dB(A)
Safety & compliance
Marks	FCC, + UL	FCC
Support & ownership
Warranty	🇺🇸 US 2 yr (light source 3 mo) · 🇨🇦 CA 2 yr	3 yr
User manual	https://files.support.epson.com/pdf/pl92__/pl92__ug.pdf	https://www.viewsonicglobal.com/public/products_download/user_guide/Projector/LS625X_LS625W/LS625X_LS625W_UG_ENG.pdf
In the box
In the box	Power cord, Remote, + Remote batteries, + User manual, VGA cable, + Software CD	Power cord, Remote, + Quick start guide, VGA cable
Remote	—	IR