ProjectorDB

BenQ TH685i vs Optoma LH352BST

BenQ TH685i is better for gaming and lighter. Optoma LH352BST is quieter.

BenQ TH685iMSRP $899
Optoma LH352BST
Key differences
White light output
3,500 lm ANSI3,300 lm ISO
Throw ratio
1.13–1.46:10.69–0.83:1
Lowest input lag
8.3 msDerived8.4 msDerived
HDR formats
HDR10, HLG—
Light source
LampLED
Fan noise
Normal 35 dB(A) · Eco 29 dB(A)Normal 31 dB(A) · Eco 29 dB(A)
MSRP
$899—
Room fit
Distance to screen
2.5–3.2 m1.5–1.8 m
Picture
White light output
3,500 lm ANSI3,300 lm ISO
Brightness uniformity
—85%
Imaging technology
DLPDLP
Chip / panel diagonal
0.48 in—
Native resolution
1080p (1920 × 1080)1080p (1920 × 1080)
Native aspect
16:9Derived16:9Derived
Colour wheel segments
6—
Colour wheel speed
2×—
Dynamic contrast
10,000:12,000,000:1
Colour gamut
Rec. 709 95% coverage—
Colour bit depth (per channel)
10 bit—
Gamma / EOTF presets
2.2, 2.4, 2.6—
Colour temperature presets
Native, Custom—
HDR formats
HDR10, HLG—
Colour management (CMS)
6-axis—
Picture mode memories
2—
3D
YesYes
3D formats
Frame packing, Side-by-side, Top-bottom, Frame sequential—
Light source
Light source
LampLED
Lamp power
245 W—
Replacement lamp
5J.JL805.001—
Light-source life
4,000 h normal · 10,000 h eco · 15,000 h super eco · 8,000 h dynamic30,000 h eco
Warm-up time
About 30 s—
Optics
Throw ratio
1.13–1.46:10.69–0.83:1
Image size
30–300 in30–300 in
Projection offset
105%103%
Zoom
OpticalOptical
Zoom ratio
1.3×Derived1.2×Derived
Focal length
11.9–15.5 mm10.2–12.24 mm
Aperture (f-number)
1.94–2.072.6–2.78
Focus
Manual—
Vertical lens shift
±5%—
Vertical keystone
40°30°
Horizontal keystone
—30°
Auto keystone
Yes—
Motion & gaming
Max input refresh
1080p: 240 Hz · 4K UHD: 60 Hz1080p: 120 Hz · 4K UHD: 60 Hz
Input lag
1080p: 60 Hz 16.7 ms · 120 Hz 8.3 ms · 4K UHD: 60 Hz 33.4 ms1080p: 60 Hz 16.7 ms · 120 Hz 8.4 ms · 4K UHD: 60 Hz 33.7 ms
Inputs & control
HDMI inputs
HDMI 2.0 (ARC, HDCP 2.2) · HDMI 2.0 (HDCP 2.2, internal)2 × HDMI 2.0
Other video inputs
VGA, Component—
Max input resolution
4K UHD—
Audio inputs
3.5 mm—
Control ports
RS-232RS-232
Horizontal scan
15–102 kHz15–135 kHz
Vertical scan
23–120 Hz24–120 Hz
Smart platform
Wi-Fi
Wi-Fi 5—
Bluetooth
4.2—
Smart platform
Android TV—
OS version
9—
Google-certified
Yes—
Chipset
Amlogic S905Y2—
RAM
2 GB—
Storage
16 GB—
Security updates until
31 Dec 2024—
Netflix
No—
Casting
Chromecast built-in—
Audio
Speaker power
5 W10 W
Speakers
11
Layout
Mono—
Audio outputs
3.5 mm, HDMI ARC3.5 mm
HDMI audio return
ARCDerivedNoneDerived
Physical & installation
Dimensions (W × D × H)
312 × 225 × 110 mm307 × 228 × 126 mm
Weight
2,790 g3,175 g
Colours
White—
Orientations
Table, Ceiling, RearTable, Ceiling, Rear, 360°
Ceiling mount
M4—
Environment & power
Operating temperature
0–40°C0–40°C
Operating humidity
10–90%RH—
Altitude
3,000 m · high-altitude mode3,048 m
Power draw
Max 340 W · Normal 297 W · Eco 206 WMax 226 W · Eco 124 W
Standby
Up to 0.5 WUp to 0.5 W
Mains input
100–240 V · 50/60 Hz100–240 V · 50/60 Hz
Fan noise
Normal 35 dB(A) · Eco 29 dB(A)Normal 31 dB(A) · Eco 29 dB(A)
Safety & support
Risk group
RG2—
Warranty
3 yr (light source 1 yr or 2,000 h)1 yr (light source 5 yr or 12,000 h)
User manual
https://esupportdownload.benq.com/esupport/PROJECTOR/UserManual/TH685i/TH685i_UM_EN_210913182301.pdfhttps://region-resource.optoma.com/products/documents/zxu5ywIf5l6KP4tqTxtOSlYPnDy1LAh9a2E2o2E4.pdf
Spare parts
Lamp 5J.JL805.001—
In the box
In the box
Power cord, Remote, Remote batteries, Quick start guide, Warranty card, VGA cable, Streaming donglePower cord, Remote, Remote batteries, Quick start guide
Remote
IR · voice—