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This is where the PX748 is the most impressive. It uses a DLP display with XPR technology for sharp, true 4K resolution. This sharpness and accuracy is enhanced by its support for HLG and HDR technology. The frame refresh rate is on par with the top performers in the home theater space, at 240Hz, so that clarity is maintained even when you’re watching sports or other fast-paced content.
A projection calculator is used to calculate a screen size when a projector is a specific distance away from the screen. As you move a projector
Features
represents the diagonal distance between the top right corner of your image (screen) and the bottom left corner of your image (screen). On The PX748-4K is a 4,000 ANSI Lumens 4K home projector that shines in value and brightness and delivers pixel-perfect visuals in true 4K clarity with HDR/HLG support. Experience a whole new level of gaming with 4.2ms Ultra-Fast Input, a 240Hz refresh rate, and USB Type-C connectivity for direct streaming from Nintendo® Switch. Set up faster and easier than ever before with powerful warping, auto V keystone, H/V keystone, and 1.3x optical zoom, capable of creating a screen of up to 300” on any surface. Adding on to that is the LAN control capability compatible with home automation systems and 12V trigger output, making the PX748-4K a perfect addition to your smart home.
Can't get this to power up or down with the Xfinity remote (Volume does work after trying a dozen codes). - Still working on a remote config for my system. The PX748-4K comes with LAN control capability that is compatible with a variety of home automation systems (incl. Control 4, Crestron, AMX, PJ Link, and Network Control), making it a perfect addition to your smart home.Plenty bright - However it is not powerful enough to overcome the room lights I have. You still want to use this in a space you have good control over the light. ViewSonic Projector Software Update is available online and enables you to keep your projector firmware up to date easily and conveniently with your laptop and USB cable connection; no need to take your projector into a service center for software updates. To determine the Image Size (screen size) enter a distance measurement number in the Throw Distance value box and hit the Enter
ViewSonic’s proprietary SuperColor™ Technology displays a wide color range, ensuring that users enjoy a true-to-life color performance in both bright and dark environments without sacrificing image quality. My setup is in a light control environment, from 6 flood lights, to hit your toe against the table kind of dark. so, I can turn on some lights and do other things while watching if needed, Like I little gaming, Total darkness not necessary for it. And still have a great picture.As we covered within the introduction, the ViewSonic PX747-4K uses the latest TI chipset to produce an image, which fools the eye into seeing 8.3 million pixels on the screen. It does this by flashing parts of the image four times to create the illusion of resolution. It’s clever technology that ultimately saves money when compared to trying to produce a native 4K DLP chip. As such, the ViewSonic PX747-4K will accept 4K content from external sources such as your UHD Blu-ray player and a streaming device such as an Apple TV 4K box or similar. Of course, it will also accept 4K games from appropriate consoles. That also means that the Viewsonic will take HDR10 signals and it will tone map these to the projectors capabilities. Just don’t expect HDR images as you know them from flat-panel TVs. The colour wheel is an RGBW unit and there is no mention of colour space coverage or if it has any special coatings to help it reach Rec.709 coverage. There is certainly going to be no wide colour gamut coverage here at this price point and with this technology. With 12V trigger output connectivity, just power on the projector and your home cinema will be all set, with the curtains closed and the projection screen lowered automatically. The latest SuperEco+ mode technology greatly extends the lamp life of the projector from 15,000 hours to 20,000 hours – meaning 4 hours a day for more than 13 years – saving you maintenance cost and effort. in your room. The position of the projector in your room changes because you will need to move the projector closer or further away from the screen
measurement between the front of the projector lens and the surface of your wall or screen. Using the Zoom Range Slider If your selected projector has a Zoom Lens then the projector's Throw Distance or Image Size can be finely adjusted by moving the ViewSonic’s proprietary SuperColor technology is used on the PX748, as well. Thanks to this, it has a broader color gamut than most projectors at a similar price point, and can maintain those same vibrant colors in any light level. Colors on the ViewSonic PX748 during Babylon (Photo Credit: Paramount Pictures) ConnectivityAdjusting the screen is a little cumbersome, but doable. Focus and zoom are stiff, making it hard to really fine tune it. It's small - This is good because I have a low ceiling where this is installed and need people to be able to walk under it. The other model that I have, I have not had any issue with it. No rainbow, dead pixel, overheating, great picture.
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