Anonymous2 years ago000Does it do the keystone correction optically or "only" digitally?Show in original language (German)rstoiber2 years ago000 Helpful answerOptically it only does the zoom, which is good and works well (most of the pixels and brightness are not lost).As far as I know, it then corrects the keystone digitally.Focusing also works digitally afterwards (automatically and well).Show in original language (German)Comment1 comment