Optoma ZK521ST vs Panasonic PT-VMZ51S

Optoma ZK521ST is lighter. Panasonic PT-VMZ51S is $316.65 cheaper and in stock.

Key differences
White light outputISO
5,000 lm ISO5,200 lm ISO (Dynamic mode) · 5,200 lm ANSI (Dynamic mode)
Native resolution
—WUXGA (1920 × 1200)
Throw ratio
0.79:11.09–1.77:1
Lowest input lag
8.6 msDerived—
Light source
Laser (phosphor)—
Fan noise
Max 29 dB(A) · Eco 29 dB(A)Normal 36 dB(A) · Eco 36 dB(A)
MSRP
$2,699—
Best price
—$2,382.35
Room fit
Distance to screen
1.7 m2.3–3.8 m
Picture
White light outputISO
5,000 lm ISO5,200 lm ISO (Dynamic mode) · 5,200 lm ANSI (Dynamic mode)
Brightness uniformity
75%85%
Imaging technology
DLP3LCD
Chip / panel diagonal
—0.64 in
Native resolution
—WUXGA (1920 × 1200)
Native aspect
16:9Derived16:10Derived
Addressable resolution
4K UHD (3840 × 2160)—
Dynamic contrast
2,000,000:13,000,000:1
Dynamic contrast method
—Light-source dimming
3D
Yes—
3D formats
Frame packing, Side-by-side, Top-bottom—
Light source
Light source
Laser (phosphor)—
Emitter
—Blue laser + phosphor
Light engine
—SOLID SHINE
Light-source life
30,000 h eco20,000 h normal · 24,000 h eco
Life defined as
—50% brightness
Optics
Throw ratio
0.79:11.09–1.77:1
Image size
30–300 in30–300 in
Projection offset
104%—
Zoom
NoneOptical
Zoom ratio
—1.62×Derived
Focal length
11.6 mm15.3–24.64 mm
Aperture (f-number)
—1.6–2.12
Focus
ManualManual
Autofocus
—No
Vertical lens shift
0–21%0–44%
Horizontal lens shift
—±20%
Motorised lens shift
—No
Vertical keystone
15°25°
Horizontal keystone
15°35°
Corner correction
4-corner—
Interchangeable lens
—No
Motion & gaming
Input lag
1080p: 60 Hz 16.7 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.7 ms—
Inputs & control
HDMI inputs
2 × HDMI 2.02 × HDMI
Other video inputs
VGAVGA
Max input resolution
—DCI 4K
Audio inputs
3.5 mm3.5 mm
USB media playback
—Yes
Control ports
RS-232, 12 V triggerRS-232
PJLink
—Class 2
Control-system drivers
—Crestron
Horizontal scan
15–150 kHz15.6–91.1 kHz
Vertical scan
24–240 Hz24–100 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
15 W10 W
Speakers
11
Layout
—Mono
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
274 × 216 × 114 mm399 × 348 × 133 mm
Weight
3,000 g6,500 g
Colours
WhiteWhite
Orientations
Portrait, 360°Table, Ceiling, Rear, 360°
Dust filter
—Washable
Ingress protection
IP6X—
Environment & power
Operating temperature
0–40°C0–45°C
Operating humidity
—20–80%RH
Altitude
3,048 m2,700 m
Power draw
Max 196 W · Eco 147 WMax 300 W · Normal 265 W · Eco 190 W
Standby
Up to 0.5 W0.5 W
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Max 29 dB(A) · Eco 29 dB(A)Normal 36 dB(A) · Eco 36 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
Hazard distance
1 m—
FDA laser notice
Notice 57—
Marks
FCCFCC
Warranty
3 yr (light source 5 yr or 12,000 h)3 yr or 6,000 h (light source 3 yr or 6,000 h)
User manual
https://region-resource.optoma.com/products/documents/wFtzMmyO3OCool38MbOjdfDaDBHsVvtzzQkcczrK.pdfhttps://docs.connect.panasonic.com/projector/products/vmz71/resources/
In the box
In the box
Power cord, Remote, Remote batteries, User manualPower cord, Remote, Remote batteries, Lens cap
Panasonic PT-VMZ51S$2,382.35 · Amazon
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