The InFocus IN138HD provides keystone correction for impression alignment. Push the "Keystone" button to the remote control or the projector and make use of the arrow buttons to adjust the keystone right up until the picture seems rectangular and with out distortion. 4. This handbook is on the market in https://kameronctgse.daneblogger.com/27831337/manual-article-review-is-required-for-this-article