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White rectangular home-theater projector with black lens and 1.6x zoom ring

OPTOMA

OPTOMA ZK551 4K UHD home theater projector 5100 lm 300000:1 1.6x zoom

SKU CH-KF2M-SEHS2 MPN ZK551

Delivers 4K UHD images up to 25 ft diagonal with 5100 lumens, 300,000:1 contrast, 1.6x zoom and 30,000-hour laser life

  • Screen diagonalMinimum Diagonal Image Size: 20 in Maximum Diagonal Image Si
  • Image brightness< 1000 lumens
  • Light source30000 Hour
  • Screen ratio16:9
  • Panel resolution3840 × 2160
  • Contrast300,000:1
  • Bright 4K UHD picture with 5100 lumens and 300000:1 contrast
  • Laser light source lasts 30000 hours with no maintenance needed
  • 6x optical zoom plus 360-degree and portrait mounting flexibility
  • Wireless Miracast projection works natively without installing any app
  • Compact design projects from 20 inches up to 25 feet diagonal

Laser light source and brightness

The ZK551 uses a DuraCore laser engine rated for 30000 hours of maintenance-free operation in normal mode. It delivers 5100 lumens of brightness and a 300000:1 contrast ratio at native 3840 x 2160 resolution. The IP6X certified optical engine resists dust ingress for reliable long-term performance.

Installation flexibility

The 1.6x optical zoom and projection distances from 39.37 inches to 30.51 feet allow image sizes between 20 inches and 25 feet diagonal. Support for 360-degree and portrait orientation suits ceiling, table or wall mounting in home theatres or meeting rooms. Installations needing lens shift or a shorter throw ratio will require a different model.

Native 4K UHD resolution

The projector produces a true 3840 x 2160 pixel image without pixel shifting, making it suitable for native 4K Blu-ray, streaming and gaming sources. Buyers whose content is limited to 1080p or lower will not benefit from the extra detail this panel provides.

How it compares

Measured against everything we stock in Home Cinema Projectors, at today’s prices. Recalculated every night.

Price $2,012.99
Pricier than about 80% of the 234 comparable items (median $272.99).
Screen diagonal Minimum Diagonal Image Size: 20 in Maximum Diagonal Image Size: 25 ft Optical Zoom: 1.6x Minimum Projection Distance: 39.37 in Maximum Projection Distance: 30.51 ft
Lower than about 99% of the 65 comparable items (median 40 in).

Specifications

Product
Brand nameOptoma Technology
Model nameDuraCore ZK551
Part numberZK551
Case colorWhite
Product type3D DLP Projector
Display
Screen diagonalMinimum Diagonal Image Size:
20 in
Maximum Diagonal Image Size:
25 ft
Optical Zoom:
1.6x
Minimum Projection Distance:
39.37 in
Maximum Projection Distance:
30.51 ft
Image brightness< 1000 lumens
Light source30000 Hour
Screen ratio16:9
Panel resolution3840 × 2160
Contrast300,000:1
Audio & video
Lens typeOptical Zoom:
1.6x
Size & build
Shipping weight5.06 kg
Package size396 × 279 × 155 mm
In the box
In the boxZK551 Compact High Brightness Miracast Wireless Projector
AC Power Cord
Remote Control
EZC-USB Dual Band Wi-Fi Adapter
2 x AAA batteries
Basic User Manual

Questions about this item

How bright will 5100 lumens actually look in a living room with some ambient light?

At 5100 lumens the image stays vivid even with lights on, making it suitable for family rooms or media spaces that are not fully darkened.

What does the HDMI connection limit for 4K UHD playback?

The HDMI input supports the native 3840 x 2160 resolution at 60 Hz, so 4K UHD sources play at full resolution without downscaling.

How much space is needed to project a 25 ft diagonal image?

The 1.6x zoom lets you place the projector between 39.37 inches and 30.51 ft from the screen to reach the maximum 25 ft diagonal.

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