Secondary lens mounted between a camera and a photographic lens
This article is about a device mounted between lens and camera. For a device mounted in front of a lens, see Teleside converter.
A teleconverter attached between a camera and its lensAn object in the image plane appears smaller by the reciprocal of the teleconverter's rating when looked through it.An Olympus DSLR with a 2× Olympus EC-20 teleconverter.[1] 1 – Camera lens 2 – Teleconverter 3 – Camera body
A teleconverter (sometimes called tele extender) is a secondary lens mounted between a camera and a photographic lens which enlarges the central part of an image obtained by the lens. For example, a 2× teleconverter for a 35 mm camera enlarges the central 12×18 mm part of an image to the size of 24×36 mm in the standard 35 mm film format.
Teleconverters are typically made in 1.4×, 1.7×, 2× and 3× variants, with 1.4× and 2× being the most common.
A 2× teleconverter doubles the apparent focal length of a given lens. Teleconverters also decrease the intensity of the light that reaches the film plane (or sensor) by the square of its magnification. A 2× teleconverter reduces the light to 1/4, doubles the focal ratio and halves the resolution of the master lens it is connected to. This, however, does not necessarily halve the resolution of the digital image.
A closely related device reduces the focal length. It is generally marketed under the name speed booster, though the term telecompressor has also been used. It is used in particular to adapt DSLR lenses to mirrorless cameras. Here the magnification is less than 1, typically 0.71× or 0.64×. In this case, the effective aperture increases accordingly.
^Olympus EC-20 2x Zuiko Digital TeleConverter Lens Archived 2011-05-12 at the Wayback Machine
A teleconverter (sometimes called tele extender) is a secondary lens mounted between a camera and a photographic lens which enlarges the central part...
specific lens/teleconverter combinations (the Canon 100-400 Mark II with 1.4x III or the Canon 200-400 with 2x III). Any other lens/teleconverter combinations...
not by magnification. Teleconverters are variations on Barlow lenses that have been adapted for photographic use. A teleconverter increases the effective...
lens is used with some other optical device, such as a close-up lens, teleconverter, or teleside converter, the camera lens itself is properly called the...
common secondary lens used behind the primary lens is the teleconverter. A typical teleconverter has a male and a female lens mount of the same type, to...
However, 27 will autofocus when the body is attached to only 2 lens/teleconverter combination with a maximum aperture of f/8. The EF 100–400mm f/4.5–5...
99 cross-type sensors. Of these points, 15 will work with any lens/teleconverter combination with a maximum aperture of f/8 or larger. Of the 153 points...
4, 5, and 8 fps) along with larger buffer New LED AF lamp Digital teleconverter simulating 50 mm and 70 mm perspectives (JPG only) The X100F was very...
AAA batteries to operate) (Komine and Cosina) 1.5× teleconverter 2× macro-focusing teleconverter. This featured a ring which, when turned, changes the...
the sensor too far away. Extension tubes are sometimes confused with teleconverters, an optical component (i.e., containing lenses) designed to increase...
on cameras with mirror). Although not recommended, it is used with teleconverters for extreme telephotos. Lenses featuring Rear Focusing (RF) system with...
Tilting and fully upwards articulating touchscreen display Digital teleconverter – 28 mm / 35 mm / 50mm (equivalent angle of view (AOV) in 35 mm full...
with 15 cross-type sensors. Of these points, 1 will work with any lens/teleconverter combination with a maximum aperture of f/8 or larger. Focus points'...
WG402 (Pro and Pro TL) Left-hand grip GL401 Flash bracket AD401 2x Teleconverter N Auto bellows N (includes double cable release) Various straps and...
Olympus stopped Four Thirds production: Olympus also made 1.4× and 2× teleconverters and an electronically coupled extension tube. Sigma has adapted 13 lenses...
a Nikon FE2 camera through a Nikkor 400mm 5.6 ED-IF lens and TC-301 teleconverter. American exchange student Kirk Martsen unexpectedly met Widener in...
converter (also known as a telephoto conversion lens or a front mount teleconverter) is a secondary lens which is mounted on the front of a photographic...
to the camera body when mounted on a teleconverter. The lens also reduces autofocus speed when a teleconverter is attached to improve autofocus accuracy...
The Canon Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the...
SLR and DSLR cameras List of camera lens manufacturers Optical train Teleconverter Teleside converter William Taylor (inventor) If the object is at a distance...
and uses of the telecompressor are largely opposite to those of the teleconverter or Barlow lens. A combined system of a lens and a focal reducer has...
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