Optoma ZH450ST vs Optoma ZH451

Optoma ZH450ST is in stock.

	Optoma ZH450ST$2,495 · Amazon Buy	Optoma ZH451

Key differences
White light output
White light output	—	4,600 lm ISO
Throw ratio
Throw ratio	0.5:1	1.4–2.24:1
HDR formats
HDR formats	HDR10, HLG	—
Fan noise
Fan noise	Max 34 dB(A) · Normal 32 dB(A)	Max 31 dB(A) · Eco 29 dB(A)
MSRP
MSRP	$3,499	—
Best price
Best price	$2,495	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	1.1 m	3.1–5.0 m
Picture
White light output
White light output	—	4,600 lm ISO
Claimed brightness (non-standard)
Claimed brightness (non-standard)	4,200 lm	—
Brightness uniformity
Brightness uniformity	75%	75%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.65 in	—
Native resolution
Native resolution	1080p (1920 × 1080)	1080p (1920 × 1080)
Native aspect
Native aspect	16:9Derived	16:9Derived
Dynamic contrast
Dynamic contrast	2,000,000:1	3,000,000:1
Colour bit depth (per channel)
Colour bit depth (per channel)	10 bit	10 bit
HDR formats
HDR formats	HDR10, HLG	—
3D
3D	Yes	Yes
3D formats
3D formats	Frame packing, Side-by-side, Top-bottom, Frame sequential	Frame packing, Side-by-side, Top-bottom
3D glasses sync
3D glasses sync	DLP-Link	DLP-Link
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Light-source life
Light-source life	30,000 h	30,000 h
Light output control
Light output control	Steps	Steps
Optics
Throw ratio
Throw ratio	0.5:1	1.4–2.24:1
Image size
Image size	36–292 in	30–300 in
Projection offset
Projection offset	116%	116%
Zoom
Zoom	None	Optical
Zoom ratio
Zoom ratio	—	1.6×Derived
Focal length
Focal length	7.51 mm	20.91–32.62 mm
Aperture (f-number)
Aperture (f-number)	2.8	2.5–3.26
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	No
Vertical keystone
Vertical keystone	30°	30°
Horizontal keystone
Horizontal keystone	30°	30°
Corner correction
Corner correction	4-corner	4-corner
Motion & gaming
Max input refresh
Max input refresh	1080p: 120 Hz	—
Input lag
Input lag	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms	1080p: 60 Hz 17 ms · 120 Hz 8.6 ms · 4K UHD: 60 Hz 16.9 ms
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.0 (HDCP 2.2)	2 × HDMI 2.0
Other video inputs
Other video inputs	—	VGA
Max input resolution
Max input resolution	4K UHD	4K UHD
Audio inputs
Audio inputs	—	3.5 mm
Control ports
Control ports	RS-232	RS-232, 12 V trigger
PJLink
PJLink	—	Class 2
Control-system drivers
Control-system drivers	—	Crestron, AMX
Horizontal scan
Horizontal scan	15–140 kHz	15–135 kHz
Vertical scan
Vertical scan	24–120 Hz	24–120 Hz
Smart platform
Ethernet
Ethernet	Yes	Yes
Audio
Speaker power
Speaker power	15 W	15 W
Speakers
Speakers	1	1
Layout
Layout	Mono	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)	274 × 216 × 114 mm	274 × 216 × 114 mm
Weight
Weight	3,000 g	2,998 g
Orientations
Orientations	Table, Ceiling, Rear, 360°	Table, Ceiling, Rear, Portrait, 360°
Ceiling mount
Ceiling mount	M4, screws ≥ 10 mm	M4, screws ≥ 10 mm
Ingress protection
Ingress protection	IP6X	IP6X
Environment & power
Operating temperature
Operating temperature	0–40°C	0–40°C
Operating humidity
Operating humidity	0–80%RH	0–80%RH
Altitude
Altitude	2,500 m · high-altitude mode	2,500 m · high-altitude mode
Power draw
Power draw	Max 173 W · Eco 119 W	Max 170 W · Eco 120 W
Standby
Standby	Up to 0.5 W	Up to 0.5 W
Power supply
Power supply	External adapter	External adapter
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Fan noise
Fan noise	Max 34 dB(A) · Normal 32 dB(A)	Max 31 dB(A) · Eco 29 dB(A)
Safety & support
Laser class
Laser class	Class 1	Class 1
Risk group
Risk group	RG2	RG2
Marks
Marks	FCC	FCC
Warranty
Warranty	3 yr (light source 5 yr or 12,000 h)	—
User manual
User manual	https://region-resource.optoma.com/products/import/Documents/02387d20-4b12-4d04-97e4-be316b803cf2.pdf	https://region-resource.optoma.com/products/documents/mpTwkm9mUWvfsgMhppFmV04EqeoeeRYWmvKy7tBF.pdf
In the box
In the box
In the box	Power cord, Remote, Remote batteries, User manual	Power cord, Remote, Remote batteries, User manual
Remote
Remote	IR	—

Optoma ZH450ST$2,495 · Amazon

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Optoma ZH451