GOODEE YG620 - Page 12

6.Focus adjustment
Put the projector vertical to the projector screen or white wall, adjust the focus roller
according to your picture or video, until the them clearly enough.
P
FOcus
7.Keystone correction
In sometimes, the images which projector on the wall is a little twisted as aladder, we
could take a keystone to adjust it. The keystone technology is the method to get the image
normalization by digital or optical. technology.
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KEYSTONE