Christie LW551i vs Panasonic PT-VMZ51S

	Christie LW551i MSRP $5,985	Panasonic PT-VMZ51S $2,319.54
Key differences
White light outputANSI	5,500 lm ANSI	5,200 lm ISO (Dynamic mode) · 5,200 lm ANSI (Dynamic mode)
Native resolution	WXGA (1280 × 800)	WUXGA (1920 × 1200)
Throw ratio	1.5–3:1	1.09–1.77:1
Light source	Lamp	Laser (phosphor)Derived
Fan noise	Normal 37 dB(A) · Eco 31 dB(A)	Normal 36 dB(A) · Eco 36 dB(A)
Price	MSRP $5,985	$2,319.54
Room fit80″100″120″150″
Distance to screen	3.2–6.5 m	2.3–3.8 m
Brightness
Rated brightness	5,500 lmDerived	5,200 lmDerived
White light outputANSI	5,500 lm ANSI	5,200 lm ISO (Dynamic mode) · 5,200 lm ANSI (Dynamic mode)
Brightness uniformity	—	85%
Display system
Imaging technology	3LCD	3LCD
Chip / panel diagonal	0.76 in	0.64 in
On-screen resolution	WXGA (1280 × 800)Derived	WUXGA (1920 × 1200)Derived
Native resolution	WXGA (1280 × 800)	WUXGA (1920 × 1200)
Native aspect	16:10Derived	16:10Derived
Contrast
Dynamic contrast	3,000:1	3,000,000:1
Dynamic contrast method	Dynamic iris	Light-source dimming
Calibration
Picture mode memories	4	—
Light source
Light source	Lamp	Laser (phosphor)Derived
Emitter	—	Blue laser + phosphor
Light engine	—	SOLID SHINE
Lamp power	330 W	—
Light-source life	2,500 h normal · 3,000 h eco	20,000 h normal · 24,000 h eco
Life defined as	—	50% brightness
Optics
Throw ratio	1.5–3:1	1.09–1.77:1
Image size	30–600 in	30–300 in
Zoom	Optical	Optical
Zoom ratio	2×Derived	1.62×Derived
Focal length	—	15.3–24.64 mm
Aperture (f-number)	—	1.6–2.12
Focus	Motorised	Manual
Autofocus	—	No
Vertical lens shift	-40–125%	0–44%
Horizontal lens shift	±22%	±20%
Motorised lens shift	Yes	No
Lens memory slots	3	—
Vertical keystone	12°	25°
Horizontal keystone	20°	35°
Auto keystone	Yes	—
Corner correction	8-point	—
Interchangeable lens	Yes	No
Inputs & control
HDMI inputs	2 × HDMI	2 × HDMI
HDMI inputs (count)	2Derived	2Derived
Other video inputs	VGA	VGA
Max input resolution	1600 × 1200	DCI 4K
Audio inputs	3.5 mm, + RCA	3.5 mm
USB media playback	Yes	Yes
Control ports	RS-232, + Wired IR	RS-232
PJLink	Class 1	Class 2
Control-system drivers	Crestron	Crestron
Horizontal scan	15–106 kHz	15.6–91.1 kHz
Vertical scan	56–120 Hz	24–100 Hz
Smart platform
Ethernet	Yes	Yes
Audio
Speaker power	16 W	10 W
Speakers	2	1
Layout	Stereo	Mono
Audio outputs	—	3.5 mm
HDMI audio return	—	NoneDerived
Physical & installation
Dimensions (W × D × H)	498 × 476 × 147 mm	399 × 348 × 133 mm
Weight	8,900 g	6,500 g
Colours	—	White
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear, + 360°
Dust filter	—	Washable
Environment & power
Operating temperature	0–40°C	0–45°C
Operating humidity	10–85%RH	20–80%RH
Altitude	3,048 m · high-altitude mode	2,700 m
Power draw	Max 480 W	Max 300 W · Normal 265 W · Eco 190 W
Standby	Up to 0.35 W	0.5 W
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Noise
Fan noise	Normal 37 dB(A) · Eco 31 dB(A)	Normal 36 dB(A) · Eco 36 dB(A)
Safety & compliance
Laser class	—	Class 1
Risk group	—	RG2
Marks	+ CE, FCC, + UL, + CCC	FCC
Support & ownership
Warranty	3 yr (light source 1 yr or 500 h)	3 yr or 6,000 h (light source 3 yr or 6,000 h)
User manual	https://www.christiedigital.com/globalassets/resources/public/020-000461-02-christie-lit-man-usr-d1.pdf	https://docs.connect.panasonic.com/projector/products/vmz71/resources/
In the box
In the box	Power cord, + Power adapter, Remote, Remote batteries, + User manual, + HDMI cable, + VGA cable, Lens cap, + Software CD	Power cord, Remote, Remote batteries, Lens cap
Remote	IR	—