Plus, there are copyright issues with this kind of projector when it comes to popular streaming services like Netflix and Hulu, so you could run into some problems when watching your favorites. The lack of a built-in interface really does hamper the ease of everyday use, and the cheap plastic body doesn't inspire confidence in longevity. If you've got the money to spend, though, we wouldn't recommend pinching pennies with this projector. This means you'll have to use a lot of cords to get the job done, but you could do a lot worse for the price, particularly given the impressive brightness at 2600 lumens. This projector is a bit different, as it does not provide any built-in interface but instead works with your Android phone or other streaming devices, like a gaming console or laptop. That's why we've included the AuKing Mini Projector, a more affordable alternative to the standard projector experience. Still, if video quality is more important than anything to you, this will be one of your best bets for the price.Īffordability, thy name is AuKing! We don't blame you if you're intimidated by all these other $200+ projectors. Combined with the annoyingly low battery life (90-120 minutes), even shorter movies will require a power cable. You can attach a casting device to get around the problem, but it's definitely a big con for this notably expensive device. Even if you manually download it, the streaming app won't play its movies and shows, which is heartbreaking. There is one huge downfall of the Xgimi Halo+, though: no Netflix. Plus, with the Android TV 10 interface built-in, you can enjoy all that content without navigating an outdated operating system. The picture adjustment is also quite impressive, automatically providing the best viewing experience without having to adjust settings on your own. The resolution is high, the colors are crisp, and the details are actually noticeable, even without the optimal lighting conditions. You'd expect the picture to be crystal clear at this price, and that's exactly what you get with this device. There you will see if the projected image is enlarged, reduced, or the same size as your smartphone.If you've got a bit more money to throw around, the Xgimi Halo+ could be the Android-powered projector you're looking for. By calculating the average of these focal length values, we can get a more precise value of the lens's focal length.Īt the bottom part of our smartphone projector calculator, you will also see some information about the magnification details of the projected image for your current viewing setup. Use the values of u and v to calculate the focal length several times. However, it would be best to take multiple data points by changing u and finding the new v that would result in another focused image on the wall. What is the focal length of the lens I'm using?įrom the earlier section, after focusing the image and measuring u and v, you can simply input their values in our smartphone projector calculator to instantly find your lens' focal length. To lock this variable, tap or click on the area at the right side of the focal length's unit and select the padlock icon. To do this, you first have to lock the Focal length of lens variable in our calculator so that it will not be recalculated when you input values for either u or v. Once you know the focal length of your lens, you can use our smartphone projector calculator to easily determine where to place your smartphone in your projector and how far to place the projector from the wall to get a sharp image. How far should I put my smartphone projector from the wall?
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