Optoma UHD51A vs ViewSonic PX747-4K

UHD51A vs PX747-4K comparison chart

Overall
Optoma UHD51A
9.6
ViewSonic PX747-4K
7.3
10
6
Votes 1 1
Rating 5 5
Optoma UHD51A

Aug 27, 2020

This Optoma UHD15A review is targeted for users who seek true realism in every scene. This device is a 4K Ultra HD projector that is unmatched in home entertainment. It will provide you with superb c...

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ViewSonic PX747-4K

Aug 27, 2020

The ViewSonic PX747-4K review is about a high brightness (3500 ANSI Lumens) 4K UHD projector for professional use and entertainment. With a brightness level of 3500 lumens, it provides a guaranteed p...

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Common

Product

Optoma UHD51A
ViewSonic PX747-4K

Model

UHD51A
PX747-4K

Brand

Optoma
ViewSonic

Reviews

146
529

Resolution

Native resolution

3840 x 2160
3840 x 2160

Max resolution (resized)

3840 x 2160
3840 x 2160

Resolution abbreviation

4K UHD
4K UHD

Properties

Projection screen size, inch

30-300
60-200

Projection distance, m/ft

0.8 - 10.6/2.9 - 34.8
0.9 - 11.6/2.9 - 38

Aspect ratio

16:9
16:9

Brightness, lumens

2400
3500

Contrast ratio

500000:1
12000:1

Throw ratio range

1.21:1 - 1.59:1
1.47:1 - 1.76:1

Color reproduction

1.07 billion
1.07 billion

Projection system

DLP
DLP

Noise level, dBA

28
27

Power consumption, W

317
310

Features

Remote control

HDR

3D

Security

kensington lock, password protection
kensington lock, password protection

Projection method

front, rear, ceiling mount, tabletop
front, rear, ceiling mount, tabletop

Wireless connection

Additional features

DLP, Amazon Alexa, Google Assistant
has not

Lamp

Lamp type, W

240
240

Lamp life (normal mode), hours

4000
4000

Lamp life (eco mode), hours

15000
15000

Connectivity

HDMI

2
2

VGA input

1
1

Composite video input (RCA)

0
0

Audio input (RCA)

0
0

Audio input (3.5mm)

1
1

Audio output (3.5mm)

1
1

SPDIF (optical)

1
0

Ethernet (RJ45)

1
0

MHL

RS-232

1
0

12V trigger

1
1

USB

3
1

USB (service)

1
1

Audio

Integrated speakers

Speaker power, W

5
10

Sound type

stereo
mono

Lens

F-number

2.5 - 3.26

Focal length, mm

20.91 - 32.62

Lens shift, %

vertical +/- 15

Zoom ratio

1.3x
1.2x

Settings

Keystone adjustment vertical, +- degrees

40

Keystone adjustment horizontal, +- degrees

Operating temperature

Min, C/F

5/41
0/32

Max, C/F

40/104
40/104

User manual

Manual

Dimensions

Size W x H x D, сm/inches

39.2 x 12.9 x 28.1/15.4 x 5.1 x 11.1
33 x 12.7 x 25.4/13.1 x 5.3 x 10.3

Weight, kg/pounds

6.5/11.7
4.01/8.84

Other

Release year

2018
2018
Optoma UHD51A
ViewSonic PX747-4K
Optoma UHD51A
ViewSonic PX747-4K

Projectors CHooseratoR comparison rating

  • better
  • worse
  • 9.6
  • 7.3
  • 9.6Optoma UHD51A
  • 7.3ViewSonic PX747-4K

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