FILM ATTRACTIONS 3D/4D
ATTRACTIONS M
3D 4D
Technological advances can benefi t well-designed and renowned attractions ROBERT SIMPSON • FOUNDER & DIRECTOR • ELECTROSONIC GROUP
emorable attractions are only achieved when there is a good story to be told, and when great attention is paid to the quality of every aspect of the attraction. The technology used is secondary, although many buyers seem to think that the technology is the only thing that matters. However, the good news is that developments in technology over the last ten years have made the realisation of complex mixed media shows much easier.
WHAT IS 3D?
Strictly speaking this is the presentation of three-dimensional images that refl ect the real world – so as your point of view changes, the image itself also changes.
Several teams are currently working on
“light fi eld” projection systems that provide this continuously changing viewpoint. In terms of an actual product, Holografi ka of Budapest is probably the furthest ahead – it offers both 70-inch self-contained displays and a “theatre” projection system. In both cases the view change is continuous, without any interruption or any need to stand in a “sweet spot” position. No special glasses are
72 Attractions Handbook 2012–2013
needed. Unfortunately the system needs a lot of projectors – the theatre system uses 100 projectors to produce a 3m (10ft)-wide image for the audience.
While it is certainly possible that such systems will become practical as the basis of attractions, for the time being “3D” is taken to mean “stereoscopic” – a system in which a scene is observed from a single viewpoint, but which presents separate images for the left and right eyes. The brain fuses these two views in a “stereopsis” process in order to create strong depth cues.
It is important to acknowledge that all the basic rules about stereoscopic images were developed in the 19th century for still images and throughout the 20th century for moving images; however, all this work depended on the use of photographs and movie fi lm. From the perspective of the attractions sector, the rules remain relevant but the presentation technology is now obsolete. The change from systems based on 35mm- and 70mm-fi lm to entirely electronic systems has been remark- ably swift – until just a few years ago it was impossible to project large images electroni- cally, but now this is the only practical way.
The massive 3D King Kong attraction at Universal Studios Hollywood features two huge screens, together measuring the same as 16 standard movie theatre screens
HOW ARE 3D IMAGES PRESENTED? Leaving aside small-scale displays suitable for signage and small exhibit applications, all large 3D images for attractions are presented by projection. The projector specification depends on the size and quality of the image
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