What is keystone correction and why is keystoning a problem?
If you are in the market for a new projector, you will no doubt have spent time studying the technical specifications of the projectors you are interested in, and seeing how these projector attributes compare. These technical specifications and how they differ will affect the way in which your whole audiovisual set up performs, and so it is very important to understand each projector specification to make sure you get the best value for money. When comparing LCD or DLP projectors, you will probably have seen projector specification sheets refer to a projector’s “keystone correction” ability. You may also have noticed that some projectors offer vertical keystone correction, while others may offer both vertical keystone correction and horizontal keystone correction. Those with horizontal keystone correction facilities are often more expensive. You may be asking yourself: “Do I need horizontal keystone correction as well as vertical keystone correction?” This Bamboo AV advice article will
