Asked by: Ingeborg Vavulin
hobbies and interests photography

What does a lens converter do?

Last Updated: 8th February, 2020

A teleconverter is basically a magnifying lensused between the camera body and the existing lens.Teleconverters can be used to increase the apparent focal length ofa lens but at the cost of overall sharpness and lensspeed.

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Simply so, how many stops do you lose with a 2x teleconverter?

A 1.4x teleconverter makes a lens lose 1stop of light. A 1.7x teleconverter makes a lenslose 1.5 stops of light. A 2x teleconvertermakes a lens lose two stops of light.

Subsequently, question is, how do teleconverters affect aperture? Effect on Aperture andAutofocus A teleconverter spreads the image out over alarger surface area. This makes the central part of the image coverthe camera sensor (magnifying it) but also discards all the lightrays from the edges of the image, so the amount of light reachingthe camera is decreased.

Subsequently, question is, do teleconverters affect focus?

Teleconverters do not weigh a lot, butprofessional telephoto lenses often do. Using ateleconverter does not affect your minimumfocusing distance. This means that you can continue to use atelephoto lens to get close-in to a subject that is not too faraway.

What does a 2x converter do?

Teleconverters can be used to increase the apparentfocal length of a lens but at the cost of overall sharpness andlens speed. A 2x teleconverter (such as the Nikon TC-20EIIAF-S teleconverter) will double the apparent focal length atthe expense of two stops of light.

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