BenQ LK936ST vs Optoma ZK507-W

BenQ LK936ST is $600 cheaper, lighter and in stock. Optoma ZK507-W is quieter.

	BenQ LK936ST$4,899 · Amazon Buy	Optoma ZK507-WMSRP $5,499

Key differences
White light outputANSI
White light outputANSI	5,100 lm ANSI	5,000 lm ANSI
Native resolution
Native resolution	—	2.7K (2716 × 1528)
Throw ratio
Throw ratio	0.81–0.89:1	1.39–2.22:1
Lowest input lag
Lowest input lag	16.7 msDerived	—
Fan noise
Fan noise	Normal 40 dB(A) · Eco 33 dB(A)	Max 32 dB(A) · Normal 30 dB(A)
MSRP
MSRP	—	$5,499
Best price
Best price	$4,899	—
Room fit80″100″120″150″
Distance to screen
Distance to screen	1.8–2.0 m	3.1–4.9 m
Picture
White light outputANSI
White light outputANSI	5,100 lm ANSI	5,000 lm ANSI
Claimed brightness (non-standard)
Claimed brightness (non-standard)	—	5,000 lm
Brightness uniformity
Brightness uniformity	—	70%
Imaging technology
Imaging technology	DLP	DLP
Chip / panel diagonal
Chip / panel diagonal	—	0.66 in
Native resolution
Native resolution	—	2.7K (2716 × 1528)
Native aspect
Native aspect	16:9Derived	16:9Derived
Pixel shift
Pixel shift	—	XPR 2-way
Addressable resolution
Addressable resolution	4K UHD (3840 × 2160)	4K UHD (3840 × 2160)
Colour wheel segments
Colour wheel segments	—	4
Dynamic contrast
Dynamic contrast	3,000,000:1	300,000:1
Colour gamut
Colour gamut	Rec. 709 92% 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	HDR10, HLG
Colour management (CMS)
Colour management (CMS)	6-axis	—
3D
3D	Yes	Yes
3D formats
3D formats	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	20,000 h	20,000 h normal · 30,000 h eco
Light output control
Light output control	—	Steps
Warm-up time
Warm-up time	30 s	—
Cool-down time
Cool-down time	90 s	90 s
Optics
Throw ratio
Throw ratio	0.81–0.89:1	1.39–2.22:1
Image size
Image size	30–300 in	26.45–302 in
Projection offset
Projection offset	—	100%
Zoom
Zoom	Optical	Optical
Zoom ratio
Zoom ratio	1.1×Derived	1.6×Derived
Focal length
Focal length	8.6–9.4 mm	20.91–32.62 mm
Aperture (f-number)
Aperture (f-number)	1.83–1.86	2.5–3.26
Focus
Focus	Manual	Manual
Autofocus
Autofocus	No	—
Vertical lens shift
Vertical lens shift	±60%	0–15%
Horizontal lens shift
Horizontal lens shift	±23%	None
Motorised lens shift
Motorised lens shift	No	—
Vertical keystone
Vertical keystone	40°	—
Horizontal keystone
Horizontal keystone	40°	—
Auto keystone
Auto keystone	Yes	—
Grid warp
Grid warp	Yes	—
Interchangeable lens
Interchangeable lens	—	No
Motion & gaming
Frame interpolation (MEMC)
Frame interpolation (MEMC)	—	Yes
Max input refresh
Max input refresh	—	4K UHD: 60 Hz
Input lag
Input lag	1080p: 60 Hz 16.7 ms · 4K UHD: 60 Hz 16.7 ms	—
Inputs & control
HDMI inputs
HDMI inputs	HDMI 2.0 (HDCP 2.2) · HDMI 2.0 (eARC, HDCP 2.2)	HDMI 2.0 (HDCP 2.2) · HDMI 1.4
Other video inputs
Other video inputs	HDBaseT	VGA, Component
Max input resolution
Max input resolution	4K UHD	DCI 4K
Audio inputs
Audio inputs	—	3.5 mm
Control ports
Control ports	RS-232, Wired IR, 12 V trigger	RS-232, 12 V trigger
PJLink
PJLink	—	Class 1
Control-system drivers
Control-system drivers	Crestron	Crestron, AMX
Horizontal scan
Horizontal scan	15–135 kHz	31–135 kHz
Vertical scan
Vertical scan	23–240 Hz	24–120 Hz
Smart platform
Ethernet
Ethernet	Yes	Yes
Audio
Speaker power
Speaker power	10 W	10 W
Speakers
Speakers	1	2
Layout
Layout	Mono	—
Audio formats
Audio formats	Dolby Atmos	—
Audio outputs
Audio outputs	3.5 mm, Optical, HDMI eARC	3.5 mm, Optical
HDMI audio return
HDMI audio return	eARCDerived	NoneDerived
Physical & installation
Dimensions (W × D × H)
Dimensions (W × D × H)	416 × 351 × 166 mm	498 × 331 × 154 mm
Weight
Weight	7,000 g	10,541 g
Colours
Colours	—	White
Orientations
Orientations	—	Table, Ceiling, Rear
Ceiling mount
Ceiling mount	—	M6, screws ≥ 10 mm
Dust filter
Dust filter	None	—
Ingress protection
Ingress protection	IP5X	—
Sealed optical engine
Sealed optical engine	Yes	—
Environment & power
Operating temperature
Operating temperature	0–40°C	5–40°C
Operating humidity
Operating humidity	10–90%RH	10–85%RH
Altitude
Altitude	3,000 m · high-altitude mode	3,000 m
Power draw
Power draw	Max 520 W · Normal 440 W	Max 423 W
Standby
Standby	Up to 0.5 W	Up to 0.5 W
Networked standby
Networked standby	Up to 2 W	—
Mains input
Mains input	100–240 V · 50/60 Hz	100–240 V · 50/60 Hz
Fan noise
Fan noise	Normal 40 dB(A) · Eco 33 dB(A)	Max 32 dB(A) · Normal 30 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	3 yr (light source 5 yr or 12,000 h)
User manual
User manual	https://esupportdownload.benq.com/esupport/PROJECTOR%20FOR%20BUSINESS/UserManual/LK936ST/LK936ST_UM_EN_241101130452.pdf	https://region-resource.optoma.com/products/import/Documents/4dcf6f0a-8c53-480d-8e23-173a8f35fd12.pdf
In the box
In the box
In the box	Power cord, Remote, Remote batteries, Quick start guide, User manual, Warranty card, HDMI cable	Power cord, Remote, Remote batteries, Quick start guide
Remote
Remote	—	Backlit

BenQ LK936ST$4,899 · Amazon

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Optoma ZK507-WMSRP $5,499