Optoma 4K400STx vs Panasonic PT-LB426

Optoma 4K400STx is quieter and in stock. Panasonic PT-LB426 is lighter.

	Optoma 4K400STx$2,289 · Amazon Buy	Panasonic PT-LB426

Key differences
White light output
White light output	—	4,100 lm ISO (Normal power, Dynamic mode) · 4,100 lm ANSI
Native resolution
Native resolution	—	1024 × 768
Throw ratio
Throw ratio	0.5:1	1.48–1.78:1
Lowest input lag
Lowest input lag	4 msDerived	—
HDR formats
HDR formats	HDR10, HLG	—
Fan noise
Fan noise	Max 28 dB(A) · Normal 24 dB(A)	Normal 38 dB(A) · Eco 35 dB(A)
MSRP
MSRP	$3,499	—
Best price
Best price	$2,289	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	1.1 m	3.0–3.6 m
Picture
White light output
White light output	—	4,100 lm ISO (Normal power, Dynamic mode) · 4,100 lm ANSI
Claimed brightness (non-standard)
Claimed brightness (non-standard)	4,000 lm	—
Brightness uniformity
Brightness uniformity	80%	85%
Imaging technology
Imaging technology	DLP	3LCD
Chip / panel diagonal
Chip / panel diagonal	0.65 in	0.63 in
Native resolution
Native resolution	—	1024 × 768
Native aspect
Native aspect	16:9Derived	4:3Derived
Pixel shift
Pixel shift	XPR 4-way	—
Addressable resolution
Addressable resolution	4K UHD (3840 × 2160)	—
Dynamic contrast
Dynamic contrast	1,000,000:1	20,000:1
Dynamic contrast method
Dynamic contrast method	Light-source dimming	—
Colour bit depth (per channel)
Colour bit depth (per channel)	—	8 bit
Gamma / EOTF presets
Gamma / EOTF presets	2.2, 2.4	—
Colour temperature presets
Colour temperature presets	D93, D65, D55, Native	—
HDR formats
HDR formats	HDR10, HLG	—
Tone mapping
Tone mapping	Adjustable	—
Colour management (CMS)
Colour management (CMS)	6-axis	—
3D
3D	Yes	—
3D formats
3D formats	Frame packing	—
Light source
Light source
Light source	Lamp	Lamp
Lamp power
Lamp power	240 W	230 W
Replacement lamp
Replacement lamp	—	ET-LAL510
Light-source life
Light-source life	4,000 h max · 10,000 h eco · 15,000 h dynamic	10,000 h normal · 20,000 h eco
Life defined as
Life defined as	—	50% brightness
Cool-down time
Cool-down time	90 s	—
Optics
Throw ratio
Throw ratio	0.5:1	1.48–1.78:1
Image size
Image size	36.43–301 in	30–300 in
Projection offset
Projection offset	116%	—
Zoom
Zoom	None	Optical
Zoom ratio
Zoom ratio	—	1.2×Derived
Focal length
Focal length	7.51 mm	19.16–23.02 mm
Aperture (f-number)
Aperture (f-number)	2.8	1.6–1.76
Focus
Focus	Manual	Manual
Vertical keystone
Vertical keystone	40°	35°
Horizontal keystone
Horizontal keystone	40°	35°
Auto keystone
Auto keystone	—	Yes
Corner correction
Corner correction	4-corner	4-corner
Grid warp
Grid warp	Yes	Yes
Interchangeable lens
Interchangeable lens	—	No
Motion & gaming
Max input refresh
Max input refresh	1080p: 240 Hz	—
Input lag
Input lag	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4 ms · 4K UHD: 60 Hz 16.7 ms	—
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.0	2 × HDMI (HDCP 1.4)
Other video inputs
Other video inputs	—	VGA, Composite
Max input resolution
Max input resolution	DCI 4K	—
Audio inputs
Audio inputs	—	3.5 mm, RCA
USB media playback
USB media playback	—	Yes
Control ports
Control ports	RS-232, 12 V trigger	RS-232
PJLink
PJLink	—	Class 2
Horizontal scan
Horizontal scan	31–135 kHz	—
Vertical scan
Vertical scan	24–120 Hz	—
Smart platform
Ethernet
Ethernet	—	Yes
Audio
Speaker power
Speaker power	10 W	10 W
Speakers
Speakers	1	—
Layout
Layout	—	Mono
Audio outputs
Audio outputs	3.5 mm	3.5 mm
HDMI audio return
HDMI audio return	NoneDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	315 × 270 × 115 mm	335 × 252 × 96 mm
Weight
Weight	3,978 g	2,900 g
Orientations
Orientations	Table, Ceiling, Rear	Table, Ceiling, Rear
Ceiling mount
Ceiling mount	—	M4, 10 mm deep, 1.25 N·m
Dust filter
Dust filter	—	Replaceable
Environment & power
Operating temperature
Operating temperature	5–40°C	5–40°C
Operating humidity
Operating humidity	10–80%RH	20–80%RH
Altitude
Altitude	3,000 m	2,700 m
Power draw
Power draw	Max 320 W · Eco 220 W	Max 300 W
Standby
Standby	0.5 W	0.5 W
Power supply
Power supply	—	Built in
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Fan noise
Fan noise	Max 28 dB(A) · Normal 24 dB(A)	Normal 38 dB(A) · Eco 35 dB(A)
Safety & support
Risk group
Risk group	RG2	—
Marks
Marks	FCC	FCC
Warranty
Warranty	2 yr	—
User manual
User manual	https://region-resource.optoma.com/products/import/Documents/5ba3a4c4-9910-4450-86ed-8d571c21506b.pdf	https://bizpartner.panasonic.net/public/ppr/file_view/194378
Spare parts
Spare parts	—	Lamp ET-LAL510 · Air filter ET-RFL300
In the box
In the box
In the box	Power cord, Remote, Remote batteries, User manual	Power cord, Remote, Remote batteries
Remote
Remote	Backlit	—

Optoma 4K400STx$2,289 · Amazon

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Panasonic PT-LB426