The “wedge� shape picture caused when the projector is not even with the horizontal or vertical center of the middle of the screen. Most data and video projectors use optical and electronic methods to eliminate this problem. The picture ‘keystones` like the keystone in an arch.
Found on
http://www.encyclo.co.uk/local/20523
The distortion of a projected slide or movie caused by the projector lens axis not being at a 90 degree angle to the screen. The image will appear wider at one edge than on the opposite and the image will not be uniformly sharp
Found on
http://www.encyclo.co.uk/local/21048
The distortion of a projected slide or movie caused by the projector lens axis not being at a 90 degree angle to the screen. The image will appear wider at one edge than on the opposite and the image will not be uniformly sharp.
Found on
http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
Converging verticals can make a building appear to be falling down (wider at the bottom than the top), this can be corrected by making sure the film plane is parallel to the photographed surface using either a Shift Lens or camera movements. It can also be corrected within Photoshop. Keystoning is also the term for the effect of a tilted (up or dow...
Found on
https://www.encyclo.co.uk/local/20176
No exact match found.
