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Epson EMP-83H Projector
Epson EMP-83H
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Optoma UHD51 Projector
Optoma UHD51
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Optoma UHD65 Projector
Optoma UHD65
Editiorial reviews
6
6 editorial reviews
I’ve been writing about projectors for more than 10 years now, and it has been a delight to see the quality increase and the prices fall. And, of course, the technological developments. But, in truth, I haven’t been all that enamoured by the move to ever higher resolutions. Some years ago, I was telling readers that “720 is plenty”. Even on a 100″ projector screen, the resolution is enough to banish any blurring at the… Now read on…Read more
Our Optoma UHD51A review takes a look at a 4K UHD HDR home theatre projector with both Alexa and Google Home support, as well as a built-in media player.Read more
‘Hey Alexa, bring the cinema home’Read more
Read editorial reviews
14
4.1 out of 5
8 user ratings
5 stars
25 %
4 stars
75 %
3 stars
0 %
2 stars
0 %
1 stars
0 %
Read editorial reviews
User rating
33
4.1 out of 5
33 user ratings
5 stars
27 %
4 stars
51 %
3 stars
21 %
2 stars
0 %
1 stars
0 %
45
3.8 out of 5
45 user ratings
5 stars
28 %
4 stars
33 %
3 stars
28 %
2 stars
8 %
1 stars
0 %
52
4.0 out of 5
52 user ratings
5 stars
36 %
4 stars
32 %
3 stars
23 %
2 stars
7 %
1 stars
0 %

General

Projector typeLCDDLPDLP
Connectivity typeWired
N/A
N/A

Connectivity

Number of component video (YPbPr/YCbCr) inputs1
N/A
N/A
Number of composite video inputs1
N/A
N/A
Serial interface typeRS-232RS-232RS-232
Number of S-Video inputs1
N/A
N/A
Number of headphone outputs2
N/A
N/A
Microphone inputyes
N/A
no
Number of VGA (D-Sub) ports111
Analog 3.5mm output
N/A
yesyes
Analogue 3.5mm input
N/A
yesyes
Digital coaxial output (S/PDIF)
N/A
yesyes
DVI in
N/A
nono
HDMI
N/A
yesyes
HDMI version
N/A
2.01.4a/2.0
Number of HDMI inputs
N/A
22
HDMI connector type
N/A
Full-sizeFull-size
HDCP
N/A
yesyes
Other connectors
N/A
5mm output5mm output
USB
N/A
yesyes
USB 2.0
N/A
22
VGA in
N/A
yesyes
12V trigger
N/A
yesyes
AC (power) input
N/A
yesyes
Analogue RCA stereo input
N/A
N/A
no
Component input (YPbPr/YCbCr)
N/A
N/A
no
Composite input
N/A
N/A
no
Digital coaxial input (S/PDIF)
N/A
N/A
no
DisplayPort
N/A
N/A
no
MHL
N/A
N/A
yes
MHL version
N/A
N/A
2.1
Headphone output
N/A
N/A
no
S-video input
N/A
N/A
no
SCART in
N/A
N/A
no
USB (total)
N/A
N/A
1
USB powered (only mha USB)
N/A
N/A
yes

Technical details

Noise level< 35< 2525 - 28
Operating relative humidity (H-H)20 - 800 - 850 - 85
Noise level (economic mode)
N/A
N/A
25.0 dB

Dimensions

Width9.65 in15.43 in19.61 in
Height4.25 in4.65 in5.55 in
Depth12.87 in11.06 in13.03 in
Weight5.95 lb11.51 lb17.2 lb

Optics

Focal length range (f-f)18.4 - 22.1212.81 - 16.7420.91 - 32.62
FocusManual
N/A
Manual
Matrix size0.63
N/A
N/A
Lens shift
N/A
yesyes
Type of lens shift
N/A
VerticalVertical
Throw ratio
N/A
1.21 - 1.591.39 - 2.22
Zoom ratio
N/A
1.3 x1.6 x
Zoom type
N/A
ManualManual
Projection distance
N/A
1.2 - 8.11.3 - 9.3
Offset
N/A
105.0 %
N/A
Lens memory
N/A
N/A
no
Aperture range (F-F)
N/A
N/A
2.5 - 3.26

Lighting

Type of lampUHE
N/A
Bulb
Lamp life max (normal)3000.0 h4000.0 h1500.0 h
Lamp life max (eco)4000.0 h10000.0 h10000.0 h
Bulb power170.0 W240.0 W240.0 W
Number of lamps
N/A
11

Image

Screen size compatibility30 - 30034.1 - 302.426.45 - 302.2
Number of colours16.78 million colours
N/A
1.073 billion colours
Aspect ratio4:3
  • 4:3
  • 16:9
  • 4:3
  • 16:9
Brightness (max)2000.0 lm2400.0 lm2200.0 lm
Screen size
N/A
34.3 - 302.426.4 - 302.4
Resolution
N/A
3840 x 2160 px3840 x 2160 px
Supported graphics resolutions
N/A
  • 640 x 480
  • 800 x 600
  • 1024 x 768
  • 1280 x 1024
  • 1280 x 720
  • 1280 x 768
  • 1600 x 1200
  • 1920 x 1080
  • 1920 x 1200
  • 3840 x 2160
  • 640 x 480
  • 800 x 600
  • 1024 x 768
  • 1280 x 1024
  • 1280 x 720
  • 1280 x 768
  • 1920 x 1080
  • 1920 x 1200
Native aspect ratio
N/A
16:916:9
Contrast ratio
N/A
500000:11200000:1
Dynamic contrast
N/A
500000:11200000:1
Video formats supported
N/A
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
  • 480i
  • 480p
  • 576i
  • 576p
  • 720p
  • 1080i
  • 1080p
  • 2160p
Image frequency
N/A
N/A
  • 24p
  • 30p
  • 50p
  • 60p
Refresh rate
N/A
N/A
120.0 Hz

Communication

Number of Ethernet LAN (RJ-45) ports111
Ethernet connection
N/A
yesyes
Wireless network (Wi-Fi)
N/A
nono

Audio features

Number of built-in speakers122
RMS rated power10.0 W5.0 W4.0 W
Built-in speakers
N/A
yesyes

Power

Power consumption (typical)248.0 W
N/A
305.0 W
Power consumption (standby)4.1 W0.5 W0.5 W
Power consumption (max)
N/A
305.0 W
N/A
Operational Power Consumption (min-max)
N/A
N/A
249 - 305
Power consumption (economy mode)
N/A
N/A
249.0 W
Separate power connector (mains)
N/A
N/A
Large power inlet connector
Power management
N/A
N/A
  • Mains
  • USB

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