Epson PowerLite E20 vs Panasonic PT-LB356

	Epson PowerLite E20 $469	Panasonic PT-LB356
Key differences
White light outputISO	3,400 lm ISO (Max power)	3,300 lm ISO (Normal power, Dynamic mode) · 3,300 lm ANSI
Throw ratio	1.44:1	1.48–1.78:1
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	Normal 38 dB(A) · Eco 35 dB(A)
Price	$469	—
Room fit80″100″120″150″
Distance to screen	2.9 m	3.0–3.6 m
Brightness
Rated brightness	3,400 lmDerived	3,300 lmDerived
White light outputISO	3,400 lm ISO (Max power)	3,300 lm ISO (Normal power, Dynamic mode) · 3,300 lm ANSI
Colour light output	3,400 lm (Normal power)	—
Brightness uniformity	—	85%
Brightness by mode	Max 3,400 lm · Eco 2,200 lm	—
Eco brightness	65%Derived	—
Display system
Imaging technology	3LCD	3LCD
Chip / panel diagonal	0.55 in	0.63 in
On-screen resolution	1024 × 768Derived	1024 × 768Derived
Native resolution	1024 × 768	1024 × 768
Native aspect	4:3Derived	4:3Derived
Contrast
Dynamic contrast	15,000:1	20,000:1
Colour
Colour bit depth (per channel)	10 bitDerived	8 bit
Light source
Light source	Lamp	Lamp
Lamp power	210 W	230 W
Replacement lamp	—	ET-LAL510
Light-source life	6,000 h normal · 12,000 h eco	10,000 h normal · 20,000 h eco
Life defined as	—	50% brightness
Cool-down time	0 s	—
Optics
Throw ratio	1.44:1	1.48–1.78:1
Image size	30–350 in	30–300 in
Zoom	Digital	Optical
Zoom ratio	—	1.2×Derived
Focal length	16.7 mm	19.16–23.02 mm
Aperture (f-number)	1.44	1.6–1.76
Focus	Manual	Manual
Autofocus	No	—
Vertical keystone	30°	35°
Horizontal keystone	30°	35°
Auto keystone	No	Yes
Corner correction	4-corner	—
Inputs & control
HDMI inputs	HDMI	2 × HDMI (HDCP 1.4)
HDMI inputs (count)	1Derived	2Derived
Other video inputs	VGA	VGA, + Composite
Max input resolution	—	WUXGA
Audio inputs	3.5 mm, RCA	3.5 mm, RCA
USB media playback	No	Yes
Control ports	RS-232	RS-232
PJLink	—	Class 2
Smart platform
Wi-Fi	None	—
Ethernet	No	Yes
Audio
Speaker power	5 W	10 W
Speakers	1	—
Layout	Mono	Mono
Audio outputs	3.5 mm	3.5 mm
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)	302 × 249 × 92 mm	335 × 252 × 96 mm
Weight	2,700 g	2,900 g
Colours	White	—
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Ceiling mount	M4, 9 mm screws	—
Dust filter	Replaceable	Replaceable
Environment & power
Operating temperature	5–40°C	5–40°C
Operating humidity	20–80%RH	20–80%RH
Altitude	3,048 m · high-altitude mode	2,700 m
Power draw	Normal 345 W · Eco 235 W	Max 300 W
Standby	0.3 W	0.5 W
Power supply	—	Built in
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Noise
Fan noise	Normal 37 dB(A) · Eco 28 dB(A)	Normal 38 dB(A) · Eco 35 dB(A)
Safety & compliance
Marks	FCC, UL	—
Support & ownership
Warranty	🇺🇸 US 2 yr (light source 3 mo) · 🇨🇦 CA 2 yr · 🇪🇺 EU 3 yr	—
User manual	https://files.support.epson.com/docid/cpd5/cpd59679.pdf	—
Spare parts	—	Lamp ET-LAL510 · Air filter ET-RFL300
In the box
In the box	Power cord, Remote, Remote batteries, + Quick start guide, + Warranty card, + HDMI cable, + Software CD	Power cord, Remote, Remote batteries