
Mark Davis
Mark Davis has been an excellent digital review editor in San Francisco for eight years and has a complete knowledge of cell phones, TVs, speakers and home theater DIY.
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Articles By This Author

Optoma Announced ZU820T and ZU725T Mid-range Projectors
- . October 20, 2022
Optoma has announced two new projectors, the ZU820T and ZU725T. The products measure 486 x 433 x 176 mm and weigh 14.0 kg. The mid-range

Will Laser Projector Dim Over Time?
- . October 13, 2022
Laser projectors offer the minimum 20,000 hours of lifespan on the light, which is crushing the lamp based projector in terms of light source lifespan.

Is Laser Projector Safe for Eyes?
- . October 10, 2022
The laser projector is an excellent alternative to TV, usually with an ultra short throw design, which can be placed in front of the wall

Is Projector More Safe for Eyes than TV?
- . October 10, 2022
Projectors are more safe for eyes than TVs, is that true? This article will give the answer from the analysis of the imaging principle of

What is Bandwidth of Cable?
- . October 1, 2022
Bandwidth for cables refers to the range of frequencies used for the transfer of information through data cables. The broader the bandwidth the more data

Can Projectors Do HDR?
- . October 1, 2022
For manufacturers and projector users, in order to pursue upgraded specifications, HDR is of course important, but it is more important for flat-screen TVs than

Does the Projector Come with a Speaker?
- . September 30, 2022
Projectors basically have their own speakers, but the power of the speakers may be different. The sound quality of most projectors is not as good

Projector Connect to PC Shows No Image Troubleshooting
- . September 29, 2022
Why doesn’t the picture appear when the projector is connected to the computer? When the projection is connected to the computer, the picture cannot be

Can I Put a Projector at an Angle?
- . September 29, 2022
Ideally, you should put your projector on the centerline of the screen to get the correct and square image. But in various using senarios, we

Can 4K HDMI Cable Improve Image Quality?
- . September 28, 2022
Most of the projector nowadays will be equipped with HDMI interface, it has become the industry standard for digital content transferring. There must be some

Does Projector Gives Off Radiation? Is It Dad?
- . September 27, 2022
Does projector gives off radiation?”, the answer is YES. However, their radiations pose little danger. The projector emits a little radiation. The radiation of the

Optoma Released Cinemax D2 Plus Projector
- . September 21, 2022
The Optoma CinemaX D2 Plus has been released in Korea. The brand’s new UHD 4K ultra short throw projector has a laser light source, allows

HDMI 2.0 vs HDMI 2.1: What’s the Difference?
- . September 20, 2022
The difference between HDMI2.0 and HDMI2.1 are as follows. The biggest difference between HDMI2.0 and HDMI2.1 is bandwidth. The transmission bandwidth of HDMI2.0 is 18Gbps,

BenQ TH690ST Review – 1080P Home Theater Projector
- . September 20, 2022
BenQ TH690ST boasts a 1080p native resolution and a 500,000:1 contrast ratio. It measures 366 x 244 x 118 mm (14.4 x 9.6 x 4.6-in)

Christie Unveils New CP4425-RGB and CP4435-RGB Projector
- . September 19, 2022
Christie’s new CP4425-RGB and CP4435-RGB deliver up to 26,000 DCI lumens and 35,000 DCI lumens, respectively. Project vibrant content on an 89-foot-wide screen. Featuring Real|Laser

How is Sharp XG-EC60SWA Projector?
- . September 15, 2022
Sharp XG-EC60SWA is a business office projector. Sharp XG-EC60SWA adopts 3LCD display technology and traditional bulb light source. Sharp XG-EC60SWA has a brightness of 6300

Is 4D Keystone Correction Necessary for Projector?
- . September 14, 2022
The projector has high requirements for placement, angle, and levelness. Not only must it be facing the screen, but it must also be horizontal and

Epson Launches CO-FH02 Multi-Purpose Projector
- . September 14, 2022
Epson’s new CO-FH02 is a portable model which is easy to transport thanks to a more compact design. Let’s take a look at it see

Vivitek Introduces New DU4871Z Laser Business Projector
- . September 13, 2022
Vivitek launches high-brightness commercial laser projector DU4871Z. Delta’s projection brand Vivitek, a global leader in power management and video surveillance solutions, recently launched the

Locking Epson EH-LS12000B’s Lens Settings and Buttons Tip
- . September 7, 2022
You can lock the buttons on the projector to prevent anyone from using the projector. You can also lock the zoom, focus, and lens shift