Optoma UHD51ALV vs Epson PowerLite 1781W

UHD51ALV vs PowerLite 1781W comparison chart

Overall
Optoma UHD51ALV
9.6
Epson PowerLite 1781W
7
10
6
Votes 1 1
Rating 5 5
Optoma UHD51ALV

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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Common

Product

Optoma UHD51ALV
Epson PowerLite 1781W

Model

UHD51ALV
PowerLite 1781W

Brand

Optoma
Epson

Reviews

146
115

Resolution

Native resolution

3840 x 2160
1280 x 800

Max resolution (resized)

4096 x 2160
1920 x 1200

Resolution abbreviation

4K UHD
WXGA

Properties

Projection screen size, inch

34-302
50-150

Projection distance, m/ft

0.8 - 10.6/2.9 - 34.9
1.1 - 4.1/3.2 - 13.1

Aspect ratio

16:9
16:10

Brightness, lumens

3000
3200

Contrast ratio

500000:1
10000:1

Throw ratio range

1.21:1 - 1.59:1
1.04:1 - 1.26:1

Color reproduction

1.07 billion

Projection system

DLP
3LCD

Noise level, dBA

28
39

Power consumption, W

317
309

Features

Remote control

HDR

3D

Security

kensington lock, password protection
password protection

Projection method

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

Wireless connection

Additional features

Amazon Alexa, Google Assistant, DLP
has not

Lamp

Lamp type, W

240
214

Lamp life (normal mode), hours

4000
4000

Lamp life (eco mode), hours

10000
7000

Connectivity

HDMI

2
1

VGA input

1
1

Composite video input (RCA)

0
1

Audio input (RCA)

0
1

Audio input (3.5mm)

1
0

Audio output (3.5mm)

1
0

SPDIF (optical)

1
0

Ethernet (RJ45)

1
0

MHL

RS-232

1
0

12V trigger

1
0

USB

3
1

USB (service)

1
1

Audio

Integrated speakers

Speaker power, W

5
1

Sound type

stereo
mono

Lens

F-number

2.5 - 3.26
1.58 - 1.7

Focal length, mm

20.9 - 32.6
13.5 - 16.2

Lens shift, %

vertical +/- 10
vertical +/- 45, horizontal +/- 30

Zoom ratio

1.3x
2.1x

Settings

Keystone adjustment vertical, +- degrees

30

Keystone adjustment horizontal, +- degrees

20

Operating temperature

Min, C/F

5/41
5/41

Max, C/F

40/104
35/95

User manual

Manual

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
29 x 5 x 21/11.42 x 2.1 x 8.2

Weight, kg/pounds

5.3/11.7
7.3/16.1

Other

Release year

2018
2017
Optoma UHD51ALV
Epson PowerLite 1781W
Optoma UHD51ALV
Epson PowerLite 1781W

Projectors CHooseratoR comparison rating

  • better
  • worse
  • 9.6
  • 7
  • 9.6Optoma UHD51ALV
  • 7Epson PowerLite 1781W

Optoma UHD51ALV competitors

Epson PowerLite 1781W competitors