Keystone correction is a familiar function in the projector market. Many cheap entry-level will adopt manual keystone correction and some smart projector supports digital keystone or auto keystone correction.
You may see that the projection image is trapezoidal, which greatly affects the viewing effect. This trapezoidal image is called the Keystone effect. You can use the keystone correction feature to make the image rectangular.
As a coin has two sides, the Keystone correction function has both pros and cons.
Pros of keystone Correction
Cos of keystone Correction
To achieve the best image quality and viewing effect, make sure that the projector is facing the projection screen directly and perpendicularly.
Related Posts
What is Keystone Correction?
What is 4D Keystone Correction in Projectors?