Mostly large-format projection (or ''large-image projection'') is used for the use of
large-format slide projectors or extremely powerful
video projector
A video projector is an image projector that receives a video signal and projects the corresponding image on a projection screen using a lens system. Video projectors use a very bright ultra-high-performance lamp (a special mercury arc lamp), ...
s for producing still-standing or dynamic images on projection areas of about 100–10,000 m
2 and more. Sometimes the use of slide projector and video projector is combined to reach a kind of "picture in picture" projection to enable larger projections with a dynamic part inside. But that is a speciality of projection artists which have a lot of detailed know how of the projection parameters.
Projectors
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