teleconverter


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teleconverter

(ˈtɛlɪkənˌvɜːtə)
n
a device for increasing the focal length of a lens
References in periodicals archive ?
Nikon D750, ISO 400, 300-mm lens with 2x teleconverter, f/8, 1/2,500 second, 1 second apart.
Towards that end, Nikon has built a 1.25x teleconverter specially to go along with the 800mm behemoth and is the first TC an ED glass element.
The fringe projection system is composed of a digital light projector (PJ503D, ViewSonic Co., Ltd., Japan), a zoom lens (AF Micro-Nikkor 60mmf/2.8D, Nikon Co., Ltd., Japan), a teleconverter lens (TC-E2, Nikon Co., Ltd., Japan), and a neutral density filter (ND8 Filter 52 mm, Kenko Co., Ltd., Japan).
I hesitate to call it strictly digital zoom because it results in a full-resolution image and, in many senses, is superior to using a teleconverter for the light transmission loss alone.
However, if the reader asks: Which is better to use, the extension tube or the teleconverter? That will depend on the preference of the user.
Unlike the weekend hide photographer focusing on Finland's well-habituated wolf packs, D'Amicis had to use his longest lenses and a teleconverter to magnify his subject suitably in frame.
The teleconverter option -The Teleconverter was briefly mentioned in Part 13 issue (March 24, 2015) of this topic.
You can boost the effective focal length of lenses and telescopes with a 2x or 3x teleconverter and an eyepiece or a Barlow lens.
Ernie Pfannenschmidt's article on using an old, surplus camera teleconverter, or TC, to make a Barlow lens (February issue, page 129) certainly caught my eye.