BenQ AK900ST vs Optoma ProScene ZU820TNL

BenQ AK900ST is lighter. Optoma ProScene ZU820TNL is $1,000 cheaper and brighter.

	BenQ AK900STMSRP $5,999	Optoma ProScene ZU820TNLMSRP $4,999

Key differences
White light outputANSI
White light outputANSI	6,000 lm ANSI	8,800 lm ISO · 7,400 lm ANSI
Native resolution
Native resolution	—	WUXGA (1920 × 1200)
Throw ratio
Throw ratio	0.81–0.89:1	—
Lowest input lag
Lowest input lag	4.8 msDerived	—
HDR formats
HDR formats	HDR10, HLG	—
Fan noise
Fan noise	Normal 34 dB(A) · Eco 29 dB(A)	Max 36 dB(A)
MSRP
MSRP	$5,999	$4,999
Room fit80″100″120″150″
Distance to screen
Distance to screen	1.8–2.0 m	—
Picture
White light outputANSI
White light outputANSI	6,000 lm ANSI	8,800 lm ISO · 7,400 lm ANSI
Brightness uniformity
Brightness uniformity	—	95%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	0.47 in	—
Native resolution
Native resolution	—	WUXGA (1920 × 1200)
Native aspect
Native aspect	16:9Derived	16:10Derived
Pixel shift
Pixel shift	Yes (scheme not stated)	—
Addressable resolution
Addressable resolution	4K UHD (3840 × 2160)	—
Dynamic contrast
Dynamic contrast	3,000,000:1	3,000,000:1
Colour gamut
Colour gamut	Rec. 709 97% coverage	—
Colour bit depth (per channel)
Colour bit depth (per channel)	10 bit	—
Gamma / EOTF presets
Gamma / EOTF presets	2.2, 2.4, 2.6	—
HDR formats
HDR formats	HDR10, HLG	—
3D
3D	—	Yes
Light source
Light source
Light source	Laser (phosphor)	Laser (phosphor)
Light engine
Light engine	—	DuraCore Laser
Light-source life
Light-source life	20,000 h normal · 30,000 h eco	30,000 h eco
Light output control
Light output control	Continuous	—
Constant brightness mode
Constant brightness mode	—	Yes
Cool-down time
Cool-down time	About 15 s	—
Optics
Throw ratio
Throw ratio	0.81–0.89:1	—
Image size
Image size	95–300 in	—
Zoom
Zoom	Optical	—
Zoom ratio
Zoom ratio	1.1×Derived	—
Focal length
Focal length	8.6–9.4 mm	—
Aperture (f-number)
Aperture (f-number)	1.83–1.86	—
Focus
Focus	Motorised	Motorised
Autofocus
Autofocus	Yes	—
Autofocus runs
Autofocus runs	On demand	—
Vertical lens shift
Vertical lens shift	±60%	—
Horizontal lens shift
Horizontal lens shift	±23%	—
Motorised lens shift
Motorised lens shift	No	Yes
Lens memory slots
Lens memory slots	5	5
Vertical keystone
Vertical keystone	30°	30°
Horizontal keystone
Horizontal keystone	30°	30°
Auto keystone
Auto keystone	Yes	—
Corner correction
Corner correction	4-corner	4-corner
Grid warp
Grid warp	Yes	Yes
Auto setup
Auto setup	Fit to screen	—
Interchangeable lens
Interchangeable lens	—	Yes
Motion & gaming
Max input refresh
Max input refresh	1080p: 240 Hz · 4K UHD: 60 Hz	—
Input lag
Input lag	1080p: 60 Hz 18.6 ms · 120 Hz 9.7 ms · 240 Hz 4.8 ms · 4K UHD: 60 Hz 18.1 ms	—
Gaming features
Gaming features	ALLM	—
Inputs & control
HDMI inputs
HDMI inputs	2 × HDMI 2.1 (HDCP 2.3) · HDMI 2.1 (eARC, HDCP 2.3)	2 × HDMI 2.0
Other video inputs
Other video inputs	—	VGA, HDBaseT
Max input resolution
Max input resolution	4K UHD	DCI 4K
Audio inputs
Audio inputs	—	3.5 mm
Control ports
Control ports	RS-232	RS-232, Wired IR, 12 V trigger
PJLink
PJLink	—	Class 1
Control-system drivers
Control-system drivers	—	Crestron, AMX
Horizontal scan
Horizontal scan	15–270 kHz	—
Vertical scan
Vertical scan	23–240 Hz	—
Smart platform
Wi-Fi
Wi-Fi	—	None
Ethernet
Ethernet	Yes	Yes
Casting
Casting	Miracast	—
Audio
Speaker power
Speaker power	20 W	20 W
Speakers
Speakers	1	2
Layout
Layout	Mono	—
Audio outputs
Audio outputs	3.5 mm	3.5 mm
HDMI audio return
HDMI audio return	eARCDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	521 × 351 × 166 mm	486 × 376 × 185 mm
Weight
Weight	10,200 g	12,601 g
Orientations
Orientations	—	360°
Ceiling mount
Ceiling mount	M4	—
Ingress protection
Ingress protection	IP5X	IP5X (light engine)
Environment & power
Operating temperature
Operating temperature	0–40°C	—
Operating humidity
Operating humidity	10–90%RH	—
Altitude
Altitude	3,000 m · high-altitude mode	—
Power draw
Power draw	348 W	Max 598 W
Standby
Standby	Up to 0.5 W	—
Networked standby
Networked standby	Up to 2 W	—
Mains input
Mains input	100–240 V · 50/60 Hz	90–264 V · 50/60 Hz
Fan noise
Fan noise	Normal 34 dB(A) · Eco 29 dB(A)	Max 36 dB(A)
Safety & support
Laser class
Laser class	Class 1	Class 1
Risk group
Risk group	RG2	RG2
FDA laser notice
FDA laser notice	—	Notice 57
Marks
Marks	—	FCC
Warranty
Warranty	3 yr	—
User manual
User manual	https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20CONSUMER/UserManual/AK900ST/AK900ST_UM_EN_260915154537.pdf	https://region-resource.optoma.com/products/documents/LB1C8hGZpjkehqqLMF8GtQVYyc4eWqkBhrj9Bny8.pdf
In the box
In the box
In the box	Power cord, Remote, Quick start guide, User manual	—
Remote
Remote	—	Backlit