Optoma UHD51A

Optoma UHD51A

Optoma UHD51A review: specs and price

Optoma UHD51A

Why is Optoma UHD51A better than the average?

  • Resolution

    3840 x 2160pxvs2.77MP
  • Lamp life

  • HDMI ports

  • USB ports

  • Weight

  • Contrast ratio

  • HDMI version

  • Volume


Price comparison

General info

This shows the lifespan of the light source. Projectors need to have their lamps (light source) replaced every now and then.
We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.


Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.


The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.

Projection quality


3840 x 2160px

Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
2.ANSI lumens


The light projected by the device is brighter, i.e. it has a higher ANSI lumens measurement.
3.has motorized zoom
Optoma UHD51A
Motorized or power zoom lenses allow the user to remotely press a switch, for example on a remote control, causing the projector to automatically zoom in or out and correct the size of the image.
4.has motorized focus
Optoma UHD51A
You can control the focus remotely, ensuring that the image stays crisp and clear.
5.has manual focus
Optoma UHD51A
This allows you to manually set the focus.
A projector zoom allows you to increase or decrease the size of the projected image without moving the projector. The most common zoom ratio among today's projectors is 1.2, which means you can vary the image size by 20% by simply adjusting the zoom lens.
Contrast ratio is the visual distance between the lightest and the darkest colors that may be reproduced on the display. A high contrast ratio is desired, resulting in richer dark colors and more distinctive color gradation.
The frequency at which the screen is refreshed. Higher frequency results in less flickering (less noise) and more natural movement representation in action-intense scenes.


More HDMI ports mean that you can simultaneously connect numerous devices, such as video game consoles and set-top boxes.
With more USB ports, you are able to connect more devices.
3.has a VGA connector
Optoma UHD51A
VGA connector is a widespread connector and is found on many video cards, computer monitors, and some television sets.
Newer versions of HDMI support higher bandwidth, which allows for higher resolutions and frame rates.


If the projector is not perpendicular to the projection surface, it will distort the image. Vertical lens shift allows you to correct this distortion so that you can place the projector below or above the projected image (e.g. mounting the projector to the ceiling).
More audio input ports mean that more audio devices such as microphones and keyboards can be connected at once.
With a standard mini jack socket, you can use the device with most headphones.

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