ProjectorDB

Optoma ZH520 vs Optoma ZK521ST

Optoma ZK521ST is lighter.

Optoma ZH520MSRP $2,699
Optoma ZK521STMSRP $2,699
Key differences
White light output
—5,000 lm ISO
Native resolution
1080p (1920 × 1080)—
Throw ratio
1.13–1.47:10.79:1
Fan noise
Max 35 dB(A) · Normal 29 dB(A)Max 29 dB(A) · Eco 29 dB(A)
MSRP
$2,699$2,699
Room fit
Distance to screen
2.5–3.3 m1.7 m
Picture
White light output
—5,000 lm ISO
Claimed brightness (non-standard)
5,500 lm—
Brightness uniformity
75%75%
Imaging technology
DLPDLP
Chip / panel diagonal
0.65 in—
Native resolution
1080p (1920 × 1080)—
Native aspect
16:9Derived16:9Derived
Addressable resolution
—4K UHD (3840 × 2160)
Dynamic contrast
3,000,000:12,000,000:1
Gamma / EOTF presets
2.2, 2.4—
Colour management (CMS)
6-axis—
3D
YesYes
3D formats
Side-by-side, Top-bottom, Frame sequentialFrame packing, Side-by-side, Top-bottom
3D glasses sync
DLP-Link—
Light source
Light source
Laser (phosphor)Laser (phosphor)
Light-source life
Up to 30,000 h max30,000 h eco
Light output control
Steps—
Cool-down time
90 s—
Optics
Throw ratio
1.13–1.47:10.79:1
Image size
30.72–320 in30–300 in
Projection offset
116%104%
Zoom
OpticalNone
Zoom ratio
1.3×Derived—
Focal length
16.9–21.61 mm11.6 mm
Aperture (f-number)
2.43–2.78—
Focus
ManualManual
Autofocus
No—
Vertical lens shift
None0–21%
Vertical keystone
30°15°
Horizontal keystone
30°15°
Corner correction
4-corner4-corner
Motion & gaming
Max input refresh
1080p: 120 Hz—
Input lag
1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 17 ms1080p: 60 Hz 16.7 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.7 ms
Inputs & control
HDMI inputs
2 × HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0
Other video inputs
—VGA
Max input resolution
4K UHD—
Audio inputs
—3.5 mm
Control ports
RS-232RS-232, 12 V trigger
PJLink
Class 2—
Control-system drivers
Crestron, AMX—
Horizontal scan
15–140 kHz15–150 kHz
Vertical scan
24–120 Hz24–240 Hz
Smart platform
Ethernet
YesYes
Audio
Speaker power
15 W15 W
Speakers
11
Audio outputs
3.5 mm3.5 mm
HDMI audio return
NoneDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
274 × 216 × 109 mm274 × 216 × 114 mm
Weight
3,402 g3,000 g
Colours
—White
Orientations
Table, Ceiling, Rear, Portrait, 360°Portrait, 360°
Ceiling mount
M4, screws ≥ 10 mm—
Ingress protection
IP6XIP6X
Environment & power
Operating temperature
0–40°C0–40°C
Altitude
2,500 m · high-altitude mode3,048 m
Power draw
Max 205 W · Eco 128 WMax 196 W · Eco 147 W
Standby
Up to 0.5 WUp to 0.5 W
Power supply
External adapter—
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
DC input
19.5 V—
Fan noise
Max 35 dB(A) · Normal 29 dB(A)Max 29 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Class 1Class 1
Risk group
RG2RG2
Hazard distance
—1 m
FDA laser notice
Notice 57Notice 57
Marks
FCCFCC
Warranty
3 yr (light source 5 yr or 12,000 h)3 yr (light source 5 yr or 12,000 h)
User manual
https://region-resource.optoma.com/products/import/Documents/7a6b0cdc-b771-4275-9e68-3d359a5c9b54.pdfhttps://region-resource.optoma.com/products/documents/wFtzMmyO3OCool38MbOjdfDaDBHsVvtzzQkcczrK.pdf
In the box
In the box
Power cord, Power adapter, Remote, Remote batteries, User manualPower cord, Remote, Remote batteries, User manual