Working with focal length


show more Working with focal length provides you with in-depth training on CAD. Taught by Brian Bradley as part of the SketchUp Rendering Using Twilight show less
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Working with focal length

One aspect of the Twilight camera that we do need to give a little bit of an explanation for is its use of this Focal Length value. Now, in photographic terms, the focal length of a lens is defined as the distance in millimeters from the optical center of the lens to the focal point, located on the sensor or film, if the subject at infinity is in focus. The values associated with focal length are based on the 35 millimeter film format. Now this means that choosing the appropriate focal length can get a little tricky in the digital arena, as many of today's cameras, even many SLR models, do not use what are called full-frame sensors-- that is sensors that are equivalent to 35 mm film.

In such cameras the cropped, or reduced, size of the sensor means that the given size of a lens--for example, a 60 millimeter lens--does not produce the same result as a 60 millimeter lens when mounted on either 35 millimeter film camera or a camera that has a full-frame sensor. In the words, compositio...

Working with focal length
Video duration: 2m 44s 2h 56m Intermediate

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Working with focal length provides you with in-depth training on CAD. Taught by Brian Bradley as part of the SketchUp Rendering Using Twilight

Subject:
CAD
Software:
SketchUp Twilight Render
Author:
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