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Overview: The AF-S Teleconverter TC-20E III is a precision optical
accessory, mounted between the camera body and the lens. It has a 2.0x optical
conversion factor, which effectively doubles the focal length of select compatible
Nikkor lenses. It is ideal for sports photography, wildlife photography,
surveillance, and more. The TC-20E III has the standard Nikon F-bayonet mount,
and is compatible with FX, DX, FX in DX crop mode, and 35mm film formats. A list
of compatible lenses can be found below.
Nikon Integrated Coating (IC): The TC-20E III has Nikon's integrated
coating which enhances light transmission efficiency, improves color
consistency, and reduces flare.
Autofocus: The TC-20E III allows auto focusing with most compatible
AF-S lenses, many with manual or auto priority. With some compatible lenses, though, auto focusing is not possible.
Focus assist may also be available in most situations.
Lens Construction: The teleconverter has 7 lens elements in
5 groups, including 1 aspherical lens element to eliminate coma and other
aberrations, especially at wide apertures. It is optimized for use with FX and
DX digital SLRs.
Exposure: The use of this teleconverter decreases the
effective aperture of the attached lens by two stops. With most AI-type cameras,
exposure is determined in the same manner as using the prime lens only. Exposure
cannot be determined with the G-type lens. For non-AI-type cameras, you will
need to perform the stop-down method to determine the proper exposure.
Compatible Lenses: The AF-S Teleconverter TC-20E III is compatible with
the following lenses:
- Compatible with no limitations:
- AF-S VR NIKKOR 200mm f/2G IF-ED
- AF-S VR NIKKOR 200mm f/2G IF-ED II
- AF-S NIKKOR 300mm f/2.8G ED VR II
- AF-S VR NIKKOR 300mm f/2.8G IF-ED
- AF-S NIKKOR 300mm f/2.8G IF-ED II
- AF-S NIKKOR 300mm f/2.8G IF-ED
- AF-I NIKKOR 300mm f/2.8D IF-ED
- AF-S NIKKOR 400mm f/2.8G ED VR
- AF-S NIKKOR 400mm f/2.8D IF-ED II
- AF-S NIKKOR 400mm f/2.8D IF-ED
- AF-I NIKKOR 400mm f/2.8D IF-ED
- AF-S NIKKOR 70-200mm f/2.8G ED VR II
- AF-S VR Zoom-NIKKOR 70-200mm f/2.8G IF-ED
- AF-S Zoom-NIKKOR 80-200mm f/2.8D IF-ED
- AF-S NIKKOR 80-400mm f/4.5-5.6 ED VRII
- Compatible, but AutoFocus not possible:
- AF-S VR Micro-NIKKOR 105mm f/2.8G IF-ED
- AF-S NIKKOR 300mm f/4D IF-ED
- AF-S NIKKOR 500mm f/4G ED VR
- AF-S NIKKOR 500mm f/4D IF-ED II
- AF-S NIKKOR 500mm f/4D IF-ED
- AF-I NIKKOR 500mm f/4D IF-ED
- AF-S NIKKOR 600mm f/4G ED VR
- AF-S NIKKOR 600mm f/4D IF-ED II
- AF-S NIKKOR 600mm f/4D IF-ED
- AF-I NIKKOR 600mm f/4D IF-ED
- AF-S NIKKOR 800mm f/5.6E ED FL
- AF-S VR Zoom-NIKKOR 200-400mm f/4G IF-ED
- AF-S Zoom-NIKKOR 200-400mm f/4G ED VR II