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viewsonic px748-4k projector reviews

The ViewSonic PX748-4K is a high-quality projector that offers a great viewing experience for both movies and gaming. It features a native resolution of 3840×2160, which is four times the resolution of Full HD. This means that you can enjoy movies and games in stunning detail, with sharp images and vibrant colors.

The PX748-4K also supports HDR10, which provides a wider range of colors and contrast than standard SDR content. This means that you can enjoy movies and games with more realistic and immersive visuals.

In addition to its impressive image quality, the PX748-4K also offers a number of other features that make it a great choice for both home and office use. 


Overall, the ViewSonic PX748-4K is a great choice for anyone looking for a high-quality projector that offers a great viewing experience for both movies and gaming. It is well-built, easy to use, and offers a variety of features that make it a great value for the price.


  • Short throw distance, which means that you can project a large image even if you don’t have a lot of space.
  • Bright output which means it works in well-lit rooms.
  • Fast response time of 16ms, which makes it great for gaming.
  • HDMI, USB and VGA input ports.


* Native 4K resolution
* HDR10 support
* Short throw distance
* Bright output
* Fast response time
* Variety of input ports



* No built-in speakers
* No lens shift
* No zoom
* Pricey

Overall, the ViewSonic PX748-4K is a great choice for anyone looking for a high-quality 4K projector. It offers a great viewing experience for both movies and gaming, and it is packed with features that make it a great value for the price. You may be looking for built-in speakers, lens shift, or zoom, and you won’t find those on this model so if these are a deal-breaker you’ll have to either purchase additional accessories or look elsewhere. We noticed some reviews mentioned early bulb failure, so we checked out the scene for replacing it.  We also wrote a post about replacement lamps because people use the terms bulb and lamp interchangeably but you’ll find you’re short-changed if you buy a bulb but you really mean lamp.

Viewsonic projector lamp

Original bulb inside projector lamp for VIEWSONIC RLC-127 / PX748-4K

Australian Seller AU$249.90 free shipping. Afterpay available.

Best and Worst Reviews of the Viewsonic PX748-4k

4.3 out of 5 stars on 790 global ratings on Amazon at the time of publishing.

The most honest reviews you’ll find on the internet are from verified purchasers. People who paid their own hard-earned money to buy a product and were given no sweetener from the producer. So for your entertainment, we curate the best and worst (judged most helpful) reviews on the product. Enjoy!

5 Star Review

Works well as a computer monitor

The unit is very bright. I don’t have to close my windows if I’m looking at high contrast things like text. Color isn’t maybe as good as more expensive projectors, but I found it to be fine. I found that using 1080p resolution for desktop use was better than 4k as the pixels are a bit fuzzy at that resolution which makes text not look as good. This is due to the pixel shifting tech used (any 4k projector sub $1600-2000 will use this).

The screen is very detailed at 4k showing movies and games, however, and the pixel shifting kind of adds a bit of an anti-aliasing effect. I dare say I might actually prefer a pixel shifting projector for computer use as it lets you decide between 4k 60hz and 240hz 1080p with both modes having their own strengths. I feel I have two monitors I like for different reasons which is cool.

There is just a slight perceptible lag on 4k, but its really not bad. I don’t notice any at 1080p 240hz. And it really does go that high, the difference between 120 and 240hz is noticeable, and it looks really good at the high refresh rate. I actually prefer it over my 144hz 1440p monitor. I don’t think this would be good enough for esports compared to a 240hz monitor, but its very close. Remember to use the game mode.

Overall it works better than I expected as a computer monitor and I’m happy with it and feel it was a good value for the money.

Other thoughts
I wish the power plug was longer. I’m not going to install this in ceiling, and I had to use an extension cord for it to reach down to a plug that is only a few feet horizontally away.

-The remote is a bit old fashioned looking. Not a big deal to me but I think ViewSonic should update the design.

Sometimes the unit makes a strange whirling sound that is annoying. Usually it doesn’t and it has done it less as I have used it. Its not the fan, it sounds like something is spinning that is not lubricated. When this isn’t happening I found the fan noise to be fairly low and constant.

It’s very easy to switch between modes like normal and eco, needing only one button to be hit. This is really nice since the bulb has a lifespan. If I know I’m going to step away from the computer for a few minutes or am going to just be looking at text I can switch it to super eco in two seconds.

SuperEco at 240hz flickers, changing to a different refresh rate fixes this.

Some tips
Dynamic Eco is basically as good as normal in terms of color and brightness at least when its showing a bright image. That’s my main setting. I think it just dims when the screen is dark. It is better than eco (but not super eco) in terms of bulb life according to the manual.

Make sure your resolution is 1920 by 1080 if you want 240hz. If its 1920 by 1200 if will default to 120hz.

If the projector is located above you, make sure you turn the projector upside down. It will need next to no keystone correction that way which keeps the image at native.
19 people found this helpful
Worst review of the viewsonic px748-4k projector

Complete Trash!!

Complete trash . This thing crapped the bed not even 18 hrs after delivery. 1st of all what a PITA to get a good picture. I have a theatre style setup in my basement with a 1080p Elsinore projector . I decided to upgrade to this junk. I had to move the view sonic 4 freaking feet closer to get a good picture. Then the next day I couldn’t even get a picture signal I had to unplug and plug in the hdmi cords to get it back. 90% of the time it doesn’t even turn on with the remote. Like I said absolutely trash product. Stay far away.

We love unbridled honesty and balanced reviews. These were the contrasting ends of the best and worst spectrum of over 790 global reviews of this projector on Amazon. No one product can be all things to all people. If the Viewsonic PX748-4K projector is looking like the model for you, feel free to use our Australian Amazon affiliate link here. We may receive a small commission if you buy this projector because of our link. Affiliate commissions keep our project going.

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