Aug 30, 2020
I hope you will find this Optoma UHD51ALV review helpful enough for your future purchases. I was very delighted to test this unit, as it has 4K True HD resolution and stunning 3D support. The colors ...
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Optoma UHD51ALV vs Nebula Mars II
Optoma and Nebula
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Common
Product
Optoma UHD51ALV
Nebula Mars II
Model
UHD51ALV
Mars II
Brand
Optoma
Nebula
Reviews
146
517
Resolution
Native resolution
3840 x 2160
1280 × 720
Max resolution (resized)
4096 x 2160
1280 × 720
Resolution abbreviation
4K UHD
HD
Properties
Projection screen size, inch
34-302
30-150
Projection distance, m/ft
0.8 - 10.6/2.9 - 34.9
1 - 3/3.2 - 9.8
Aspect ratio
16:9
16:9
Brightness, lumens
3000
300
Contrast ratio
500000:1
1000:1
Throw ratio range
1.21:1 - 1.59:1
Color reproduction
Projection system
DLP
DLP
Noise level, dBA
28
32
Power consumption, W
317
57
Features
Remote control
HDR
3D
Security
kensington lock, password protection
Projection method
front, rear, ceiling mount, tabletop
front, rear, tabletop
Wireless connection
Additional features
Amazon Alexa, Google Assistant, DLP
Android OS, Bluetooth, Wi-Fi
Lamp
Lamp type, W
240
Lamp life (normal mode), hours
4000
30000
Lamp life (eco mode), hours
10000
30000
Connectivity
HDMI
2
1
VGA input
1
0
Composite video input (RCA)
0
0
Audio input (RCA)
0
0
Audio input (3.5mm)
1
0
Audio output (3.5mm)
1
1
SPDIF (optical)
1
0
Ethernet (RJ45)
1
0
MHL
RS-232
1
0
12V trigger
1
0
USB
3
1
USB (service)
1
0
Audio
Integrated speakers
Speaker power, W
5
5
Sound type
stereo
stereo
Lens
F-number
2.5 - 3.26
Focal length, mm
20.9 - 32.6
Lens shift, %
vertical +/- 10
Zoom ratio
1.3x
Settings
Keystone adjustment vertical, +- degrees
Keystone adjustment horizontal, +- degrees
Operating temperature
Min, C/F
5/41
0/32
Max, C/F
40/104
35/95
Dimensions
Size W x H x D, сm/inches
39.1 x 12.9 x 28,1/15.4 x 5.1 x 11.1
12.2 × 13.8 × 17.8/ 4.8 × 5.4 × 7
Weight, kg/pounds
5.3/11.7
1.4/2.2
Other
Release year
2018
2018
Projectors CHooseratoR comparison rating
- 9.6Optoma UHD51ALV
- 6.6Nebula Mars II
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