Optoma HD28HDR vs BenQ TH685 review
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Common
Product
Optoma HD28HDR
BenQ TH685
Model
HD28HDR
TH685
Brand
Optoma
BenQ
Rating
Reviews
Translation properties
Projection system
DLP
DLP
Native resolution
1920x1080
1920x1080
Aspect ratio
16:9
16:9
Pixel number
2073600
2073600
Brightness
3600 lumens
3500 lumens
Color reproduction
1.07 billion
1.07 billion
Contrast ratio
50000:1
10000:1
Throw ratio range
1.47 – 1.62
1.13 – 1.46
Lamp
Lamp type
240 W
245 W
Lamp life
Normal mode
4000
4000
Eco mode
15000
15000
Lens
F-number
2.1 – 2.3
1.9 – 2.1
Focal length
15.6 to 17.1 mm
11.9 - 15.5 mm
Lens shift
has not
Zoom ratio
1.0 - 1.1
1.0 - 1.3
Interface
HDMI
2
2
D-sub 15pin
has not
1
Composite video (RCA)
has not
has not
Audio L/R (RCA)
has not
has not
Audio out (Mini Jack)
1
1
USB (Type A)
1
has not
USB (Type mini-B)
has not
has not
RS232 (DB-9pin)
has not
1
Sound
Integrated speaker
Speaker power
5 W
5 W
Sound type
mono
mono
Resolution support
640 x 480
1024 x 768
1280 x 800
1400 x 1050
1920 x 1080
Video compatibility
NTSC
PAL
SECAM
3D
Settings
Keystone correction manual
vertical +-40 degrees
Keystone correction auto
vertical +-40 degrees
Operating distance
19 ft
Security functions
Audible noise
Normal mode
28 dB
35 dB
Eco mode
26 dB
29 dB
Operating temperature
Min
5
0
Max
40
40
Features
Color
white
white
Wireless
Remote control
Mouse functions
Warranty
1 year
3 year
Dimensions
Product size
9.5 x 12.4 x 4.3 inches
?12.28 x 8.86 x 4.33 inches
Product weight
8.50 pounds
?6.15 pounds
Optoma HD28HDR overview
BenQ TH685 overview
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