How can I use keystone correction function to get ideal images?

How can I use keystone correction function to get ideal images?

Most projectors come with manual keystone correction or digital keystone correction. If you have a projector that only has manual correction, you need to adjust the lens manually because the correction is not that smart. Comparing to manual keystone correction, digital correction is flexible and much easier. Some projectors have a selected algorithm to make the image square automatically if the projector is at an angle. This can save you a lot of time when setting up a projector.

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