ProjectorDB

Optoma ZH420 vs Optoma ZK420UST

Optoma ZH420
Optoma ZH420
MSRP $1,799
Optoma ZK420UST
Optoma ZK420UST
Key differences
White light output—4,200 lm ANSI
Native resolution1080p (1920 × 1080)—
Throw ratio1.12–1.47:10.25:1
Lowest input lag8.6 msDerived4.3 msDerived
Fan noiseMax 31 dB(A) · Normal 29 dB(A)Max 34 dB(A) · Eco 29 dB(A)
PriceMSRP $1,799—
Room fit
Distance to screen2.5–3.3 m0.55 m
Brightness
Rated brightness—4,200 lmDerived
White light output—4,200 lm ANSI
Claimed brightness (non-standard)4,300 lm—
Brightness uniformity75%75%
Display system
Imaging technologyDLPDLP
Chip / panel diagonal0.65 in—
On-screen resolution1080p (1920 × 1080)Derived4K UHD (3840 × 2160)Derived
Native resolution1080p (1920 × 1080)—
Native aspect16:9Derived16:9Derived
Pixel shift—XPR 4-way
Addressable resolution—4K UHD (3840 × 2160)
Contrast
Dynamic contrast2,000,000:1500,000:1
Colour
Gamma / EOTF presets2.2, 2.42.2, 2.4
HDR
HDR formatsHDR10, HLGHDR10, HLG
Calibration
Colour management (CMS)6-axis—
3D
3DYesYes
3D formatsFrame packing, Side-by-side, Top-bottom, Frame sequentialFrame packing, Side-by-side, Top-bottom, Frame sequential
3D glasses syncDLP-LinkDLP-Link
Light source
Light sourceLaser (phosphor)Laser (phosphor)
Light-source lifeUp to 30,000 h max30,000 h eco
Light output controlStepsSteps
Cool-down time90 s—
Optics
Throw ratio1.12–1.47:10.25:1
Image size31–322 in100–150 in
Projection offset116%120%
ZoomOpticalNone
Zoom ratio1.31×Derived—
Focal length16.9–21.61 mm3.7 mm
Aperture (f-number)2.43–2.782.44
FocusManualManual
AutofocusNo—
Vertical lens shiftNone—
Vertical keystone30°—
Horizontal keystone30°—
Auto keystoneYes—
Corner correction4-corner4-corner
Grid warp—Yes
Interchangeable lens—No
Motion & gaming
Max input refresh1080p: 120 Hz—
Max refresh at 1080p120 HzDerived—
Input lag1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 17 ms1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4.3 ms · 4K UHD: 60 Hz 16.9 ms
Lowest input lag8.6 msDerived4.3 msDerived
Input lag at 4K 60 Hz17 msDerived16.9 msDerived
Inputs & control
HDMI inputsHDMI 2.0 · HDMI 2.0 (HDCP 2.2)2 × HDMI 2.0
HDMI inputs (count)2Derived2Derived
Newest HDMI versionHDMI 2.0DerivedHDMI 2.0Derived
Other video inputs—HDBaseT
Max input resolutionDCI 4K4K UHD
Control portsRS-232RS-232
Control-system driversCrestron, AMX—
Horizontal scan15–140 kHz15–150 kHz
Vertical scan24–120 Hz24–240 Hz
Smart platform
EthernetYesYes
Audio
Speaker power15 W15 W
Speakers11
Layout—Mono
Audio outputs3.5 mm3.5 mm, + HDMI eARC
HDMI audio returnNoneDerivedeARCDerived
Physical & installation
Dimensions (W × D × H)274 × 216 × 114 mm327 × 328 × 110 mm
Weight3,000 g4,200 g
Orientations+ Table, + Ceiling, + Rear, Portrait, 360°Portrait, 360°
Ceiling mountM4, screws ≥ 10 mmM4, 10 mm screws
Ingress protectionIP6XIP6X
Environment & power
Operating temperature0–40°C0–40°C
Operating humidity—10–85%RH
Altitude2,500 m · high-altitude mode3,048 m · high-altitude mode
Power drawMax 173 W · Eco 119 WMax 255 W · Eco 180 W
StandbyUp to 0.5 W0.5 W
Power supplyExternal adapterExternal adapter
Mains input100–240 V · 50/60 Hz100–240 V · 50/60 Hz
DC input19 V24 V
Noise
Fan noiseMax 31 dB(A) · Normal 29 dB(A)Max 34 dB(A) · Eco 29 dB(A)
Safety & compliance
Laser classClass 1Class 1
Risk groupRG2RG2
FDA laser noticeNotice 57Notice 57
MarksFCCFCC
Support & ownership
Warranty3 yr (light source 5 yr or 12,000 h)3 yr (light source 5 yr or 12,000 h)
User manualhttps://region-resource.optoma.com/products/import/Documents/02387d20-4b12-4d04-97e4-be316b803cf2.pdf—
In the box
In the boxPower cord, Remote, Remote batteries, Quick start guidePower cord, + Power adapter, Remote, Remote batteries, Quick start guide
Remote—IR