![]() How Do Lens Shift and Lens Offset Differ? However, if you're not thoroughly familiar with either or both features, or you're used to a different way to describe them, you can probably benefit from a roadmap for translating our comments in the reviews into a better understanding of where you can place the projector. We address this issue in our reviews by giving all the information you need to understand how much offset or shift there actually is. Without knowing where the 0% position (i.e., the starting point) is, the offset spec doesn't tell you anything. And still other manufacturers give different numbers. What some manufacturers call 10% offset, others call 110% (measuring from the top of the image) or 60% (measuring from the horizontal midline of the image). The problem you run into is that different manufacturers measure the offset from different starting positions. (As a point of reference, a 100-inch diagonal, 16:9 image is 49 inches high.) For example, this would be 5 inches higher for a 50-inch high image. So, if 0% is defined as the point where the lens centerline is even with the bottom of the image, a 10% offset would put the bottom of the image an amount that's 10% of the image height higher than the lens centerline. Lens offset, for example, tells you how far the lens-and therefore the image-is offset from a position that would count as 0%. One major problem is that there is no standard among projector makers for describing either one. But the specs can often be misleading or confusing. These are supposed to tell you where you can, or have to, position your projector-whether up, down, left, or right-relative to the screen to avoid keystone correction. Unfortunately, decoding shift and offset specs can be a challenge. However, there are good reasons to avoid keystone correction (more on that later), and the better strategy is to pick a projector in the first place with an offset or lens shift that won't need keystone adjustment from your planned mounting position. They either don't think about them at all, or they just figure they'll rely on keystone correction to square off the image if they have to tilt the projector to point at the screen. Check out these great choices while you’re shopping for the best universal projector mount.Some people don't pay much attention to lens offset or lens shift when choosing a projector. More to think about than you assumed, right? We’ve got your back. Will your screen move? Static screen means fixed mount, but if your setup is in a room where daylight forces you to project onto a different wall, you’ll want a mount that allows you to point the projector in different directions. (A dedicated mount will be designed to avoid those.) And while you may be tempted to go for the heavier steel mount thinking it’s stronger, those can easily become hot boxes, while aluminum ones will allow more heat to escape. How does your mount come into play? Ones with less surface area are less likely to cover the projector’s ventilation fans. Nothing kills a projector faster than overheating, and they generate a ton of heat. Some like it hot – but your projector definitely doesn’t. And then double and triple check the weight capacity of the mount you’re looking for. If you’ve tossed the manual with the specs, check the manufacturer’s website. Weight capacity You absolutely need to find out how much your projector weighs. The downside is they are harder to set up, and you do run the risk of an imperfect fit. Universal mounts have the advantage of surviving the day when your projector invariably becomes obsolete and needs to be replaced, or the day when you just decide to splurge on a new one. So, not a bad idea, and your best bet is to buy directly from the manufacturer or as a package deal where you bought the projector. Here are some of the things to look for when choosing your projector mount:ĭo you want a specific mount for your projector? You can get a dedicated mount for many projectors, and it’s the best way to ensure the fit will be perfect and the screw holes will all line up perfectly. A little research now could save you all sorts of trouble down the road. It’s not such a minor detail after all, and you want your setup to be perfect. ![]() It may sound like a minor detail, but choose the wrong projector mount and you could end up with a shaky picture, an overheated projector, or worst of all, an expensive projector lying on the floor in pieces because the mount you cheaped out on fell apart. If you purchase an independently reviewed product or service through a link on our website, Variety may receive an affiliate commission.Īll the time and money you put into your home theater setup can be completely undone by the one purchase you probably spent the least amount of time and money on – your projector mount.
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