33. What is a teleconverter?
Description
This article is from the Photographic Lenses FAQ, by David Jacobson with numerous contributions by others.
33. What is a teleconverter?
A teleconverter is a device that enlarges the center portion of the normal frame to fill the whole frame. In 35mm systems where the frames are 24x36 millimeters, a 2X teleconverter expands the central 12x18 mm to fill the full 24x36mm frame.
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