Casio XJ-M251 vs Epson PowerLite 1780W

	Casio XJ-M251	Epson PowerLite 1780W MSRP $849.99
Key differences
White light output	—	3,000 lm ISO
Throw ratio	1.32–1.93:1	1.04–1.26:1
Light source	Hybrid laser + LED	Lamp
Fan noise	—	Normal 39 dB(A) · Eco 30 dB(A)
Price	—	MSRP $849.99
Room fit80″100″120″150″
Distance to screen	2.8–4.2 m	2.2–2.7 m
Brightness
Rated brightness	—	3,000 lmDerived
White light output	—	3,000 lm ISO
Colour light output	—	3,000 lm
Claimed brightness (non-standard)	3,000 lm	—
Brightness by mode	—	Normal 3,000 lm · Eco 1,900 lm
Eco brightness	—	63%Derived
Display system
Imaging technology	DLP	3LCD
Chip / panel diagonal	0.65 in	0.59 in
On-screen resolution	WXGA (1280 × 800)Derived	WXGA (1280 × 800)Derived
Native resolution	WXGA (1280 × 800)	WXGA (1280 × 800)
Native aspect	16:10Derived	16:10Derived
Contrast
Dynamic contrast	1,800:1	Up to 10,000:1
Dynamic contrast method	—	Dynamic iris
Colour
Colour bit depth (per channel)	8 bitDerived	10 bit
3D
3D	Yes	—
3D formats	Frame sequential	—
Light source
Light source	Hybrid laser + LED	Lamp
Emitter	Laser + LED	—
Lamp power	—	206 W
Replacement lamp	—	ELPLP94
Light-source life	20,000 h	4,000 h normal · 7,000 h eco
Warm-up time	5 s	—
Cool-down time	—	0 s
Optics
Throw ratio	1.32–1.93:1	1.04–1.26:1
Image size	35–300 in	30–300 in
Projection offset	83%	—
Zoom	Optical	Optical
Zoom ratio	1.46×Derived	1.21×Derived
Focal length	—	13.52–16.22 mm
Aperture (f-number)	—	1.58–1.7
Focus	Manual	Manual
Autofocus	No	—
Vertical lens shift	—	None
Horizontal lens shift	—	None
Vertical keystone	30°	30°
Horizontal keystone	—	30°
Auto keystone	Yes	Yes
Interchangeable lens	—	No
Motion & gaming
Native 24p	—	Via pulldown
Inputs & control
HDMI inputs	HDMI	HDMI
HDMI inputs (count)	1Derived	1Derived
Other video inputs	VGA	VGA, + Component, + Composite
Max input resolution	1600 × 1200	1080p
Audio inputs	3.5 mm, + RCA	3.5 mm
USB media playback	—	Yes
Control ports	RS-232	—
Control-system drivers	Crestron	—
Horizontal scan	31.5–91.1 kHz	—
Vertical scan	56–85 Hz	—
Smart platform
Wi-Fi	NoneDerived	Wi-Fi 4
Ethernet	NoDerived	—
Audio
Speaker power	5 W	1 W
Speakers	1Derived	1
Layout	Mono	Mono
Audio outputs	3.5 mm	—
HDMI audio return	NoneDerived	—
Physical & installation
Dimensions (W × D × H)	311 × 244 × 84.1 mmDerived	292 × 213 × 44 mm
Weight	3,900 gDerived	1,770 g
Colours	White	—
Orientations	Ceiling, Rear	+ Table, Ceiling, Rear
Ceiling mount	3 × M3, 7 mm deep	—
Dust filter	—	Replaceable
Environment & power
Operating temperature	5–35°CDerived	5–40°C
Operating humidity	20–80%RH	20–80%RH
Altitude	3,000 m · high-altitude mode	3,000 m · high-altitude mode
Power draw	Max 180 W · Normal 180 W · Eco 145 W	Normal 290 W · Eco 208 W
Standby	0.12 W	0.18 W
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Noise
Fan noise	—	Normal 39 dB(A) · Eco 30 dB(A)
Safety & compliance
Marks	—	FCC, UL
Support & ownership
Warranty	3 yr (light source 3 yr or 6,000 h)	🇺🇸 US 2 yr (light source 3 mo) · 🇪🇺 EU 5 yr (light source 5 yr or 1,000 h)
User manual	https://www.projectorcentral.com/pdf/projector_manual_8251.pdf	https://files.support.epson.com/docid/cpd5/cpd52793.pdf
Spare parts	—	Lamp ELPLP94 · Air filter ELPAF53 · Mount ELPMB23
In the box
In the box	Power cord, Remote, Quick start guide, + VGA cable	Power cord, Remote, + Remote batteries, Quick start guide, + User manual, + USB cable, + Carry case, + Software CD