As we can see that there are lots of types of projectors available in the market now: from very small to very big; portable or fixed; long throw or short throw, or even ultra-short throw. And we have a plan on buying a new projector, we will have to consider lots of different factors: how bright it is, what kind of the resolution to match the demand, how big it can display in the room?
One of the most important factors that we should consider before buying is: Long throw, short throw or ultra-short throw? So what is the difference between them?
Distance from projector to the screen
According to Wikipedia, throw is the distance the image is thrown onto the screen from the projector, and it has a big effect on the screen size. A related measurement, throw ratio, is the ratio of the distance from the lens to the screen (throw) to the screen width. A larger throw ratio corresponds to a more tightly focused optical system.
Thereby, the first difference between “long throw” and “ultra-short throw” is about the distance from the projector to the screen. This difference is decided by the type of the lens on the projector. Generally, the lens for long throw is cheaper than the one for ultra-short throw, due to the quality of glass necessary to make them work.
Besides, since ultra-short throw projectors just need a very short distance to display the image to the screen, then we can simply put it right next to the screen/wall and the installation is almost no needed. Everything to do with an ultra-short throw projector is much easier! Such as with Fangle S1, we just need a small table next to the wall (about 40cm to the wall) to put it on, and then adjust the scale we want. Of course, we also can mount the projector on the wall or on a shelf if we want.
Difference in image quality
With long throw projectors, we usually have a problem with the outside light. In order to display the high quality of the image from a long throw projector, we will have to turn off the light in the room or close the window. Otherwise, the image on the screen will not be clear. Meanwhile, this limitation can be solved with an ultra-short throw projector. How to explain this issue?
At first, long throw projectors display the image from a long distance to the screen, which reduces the lumens of the image on the screen. For an example, if the light source of a long throw projector is 10,000lm, the lumens on the screen might be just 2000lm (just for example). Meanwhile, an ultra-short throw projector (like our Fangle S1), the light source is also 10,000lm, but the lumens on the screen we have here can be about 3200lm (with the same screen size). With better lumens on the screen, the image will have better quality, and we no need worry about ambient light. This still can be much better when we use Fangle S1 with Focalmax’s special anti-light screen (no power consumption).
Difference in price
As we said above, ultra-short throw projectors use a more expensive lens than the one on long throw projects. And in general, an ultra-short throw projector is also more expensive than a long throw one. Then is worth for us to have an ultra-short throw projector? Personally, It is worth! From above, we can see lots of benefits of this type of projector, then why not? Of course, it is still up to the demand and the budget we have.