![]() ![]() The most common being fingerprints, which leads to dust collecting on the lens as mentioned above. Different things can cause this type of issue. That’s where the light comes from, after all, so if there are greasy fingerprints that have collected dust here, that will interfere with the light beam and lead to distortion. If part of the image you’re seeing is in focus and looks correct, but other parts of the image are blurry, or if the entire image is too blurry/fuzzy to even allow you to dial in the focus, then this could be an issue with the lens of the projector itself. Maybe it’s not your entire image that’s blurry or fuzzy, just a small part of it. If you’re still pre-install, we have an article discussing the throw ratio and some calculations you can do to get it right. Remember, that slice always exists, our job with the projector focus knob is to move it so that the slice exists on the screen. When you first turn the projector on is when you use the focus ring to move that slice of the light beam where the image looks good back and forth. You start with where you want the screen, then put the projector far enough back that it will work based on its throw ratio. Instead, we use focus to allow ourselves an easy install. However, we don’t have the luxury of setting up a projector, turning it on, and moving the screen closer and further away to find that slice where the image from the light beam looks good. ![]() That slice of the light beam from the projector where the image has been expanded just enough that it looks good always exists. The reason I bring this up is that it helps to understand focus if you realize that if you were to move the screen and “check” whether the image looks good from various distances in front of the projector, you will always find some distance at which the image looks good. So, something really obvious is happening here: the further you get away from the projector, the larger the image is getting. ![]() In most instances, people like to project at least a 100-inch diagonal image on a projector screen. If you put your hand directly in front of the projector, it will project a small rectangle not much larger than a postage stamp. And most problems with fuzziness are simply small mismatches between where the image is in focus vs. This shift in distance either narrows or expands the image coming out of the lens. Your projector will have a physical focus adjustment ring around the lens, and twisting this ring adjusts the focus by increasing and decreasing the distances between components in the lens itself. There’s a reason we’re starting with focus: this is the best built-in way to adjust your projector’s image quality, especially if the problem you’re seeing is that the image is blurry or fuzzy. ![]()
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