ProjectorDB

Optoma ZK420UST vs Optoma ZK450

Optoma ZK420UST
Optoma ZK420UST		Optoma ZK450Optoma ZK450
MSRP $5,749
Key differences
White light output4,200 lm ANSI—
Throw ratio0.25:11.4–2.24:1
Lowest input lag4.3 msDerived4.4 msDerived
Fan noiseMax 34 dB(A) · Eco 29 dB(A)Max 35 dB(A) · Normal 28 dB(A)
Price—MSRP $5,749
Room fit
Distance to screen0.55 m3.1–5.0 m
Brightness
Rated brightness4,200 lmDerived—
White light output4,200 lm ANSI—
Claimed brightness (non-standard)—4,200 lm
Brightness uniformity75%80%
Display system
Imaging technologyDLPDLP
Chip / panel diagonal—0.65 in
On-screen resolution4K UHD (3840 × 2160)Derived4K UHD (3840 × 2160)Derived
Native aspect16:9Derived16:9Derived
Pixel shiftXPR 4-way—
Addressable resolution4K UHD (3840 × 2160)4K UHD (3840 × 2160)
Contrast
Dynamic contrast500,000:1300,000:1
Colour
Gamma / EOTF presets2.2, 2.42.2, 2.4
HDR
HDR formatsHDR10, HLGHDR10, HLG
Calibration
Colour management (CMS)—6-axis
3D
3DYesYes
3D formats+ Frame packing, Side-by-side, Top-bottom, Frame sequentialSide-by-side, Top-bottom, Frame sequential
3D glasses syncDLP-LinkDLP-Link
Light source
Light sourceLaser (phosphor)Laser (phosphor)
Light-source life30,000 h ecoUp to 30,000 h max
Light output controlStepsSteps
Cool-down time—90 s
Optics
Throw ratio0.25:11.4–2.24:1
Image size100–150 in26–303 in
Projection offset120%116%
ZoomNoneOptical
Zoom ratio—1.6×Derived
Focal length3.7 mm20.91–32.62 mm
Aperture (f-number)2.442.5–3.26
FocusManualManual
Autofocus—No
Vertical keystone—30°
Horizontal keystone—30°
Corner correction4-corner4-corner
Grid warpYes—
Interchangeable lensNo—
Motion & gaming
Max input refresh—1080p: 240 Hz · 4K UHD: 60 Hz
Max refresh at 1080p—240 HzDerived
Max refresh at 4K—60 HzDerived
Input lag1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 240 Hz 4.3 ms · 4K UHD: 60 Hz 16.9 ms1080p: 60 Hz 16 ms · 120 Hz 8 ms · 240 Hz 4.4 ms · 4K UHD: 60 Hz 16 ms
Lowest input lag4.3 msDerived4.4 msDerived
Input lag at 4K 60 Hz16.9 msDerived16 msDerived
Inputs & control
HDMI inputs2 × HDMI 2.0HDMI 2.0 · HDMI 2.0 (eARC)
HDMI inputs (count)2Derived2Derived
Newest HDMI versionHDMI 2.0DerivedHDMI 2.0Derived
Other video inputsHDBaseT—
Max input resolution4K UHD4K UHD
Control portsRS-232RS-232
Control-system drivers—Crestron, AMX
Horizontal scan15–150 kHz15–140 kHz
Vertical scan24–240 Hz24–240 Hz
Smart platform
EthernetYesYes
Audio
Speaker power15 W15 W
Speakers11
LayoutMono—
Audio outputs3.5 mm, HDMI eARC3.5 mm, HDMI eARC
HDMI audio returneARCDerivedeARCDerived
Physical & installation
Dimensions (W × D × H)327 × 328 × 110 mm274 × 216 × 114 mm
Weight4,200 g3,000 g
OrientationsPortrait, 360°+ Table, + Ceiling, + Rear, Portrait, 360°
Ceiling mountM4, 10 mm screwsM4, screws ≥ 10 mm
Ingress protectionIP6XIP6X
Environment & power
Operating temperature0–40°C0–40°C
Operating humidity10–85%RH—
Altitude3,048 m · high-altitude mode—
Power drawMax 255 W · Eco 180 WMax 185 W · Eco 126 W
Standby0.5 WUp to 0.5 W
Networked standby—Up to 2 W
Power supplyExternal adapterExternal adapter
Mains input100–240 V · 50/60 Hz100–240 V · 50/60 Hz
DC input24 V—
Noise
Fan noiseMax 34 dB(A) · Eco 29 dB(A)Max 35 dB(A) · Normal 28 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)1 yr (light source 5 yr or 12,000 h)
User manual—https://region-resource.optoma.com/products/import/Documents/cbd58627-8cc5-43de-9633-fa24cd20bd45.pdf
In the box
In the boxPower cord, Power adapter, Remote, Remote batteries, Quick start guidePower cord, Power adapter, Remote, Remote batteries, Quick start guide, + User manual
RemoteIR—