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Tamron AF20PN-700 Sp 2x Pro Teleconverter

Tamron AF20PN-700 Sp 2x Pro Teleconverter
Price: $259.99
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Features:

Magnification 2x
Lens Elements/Groups 7/4
Length 1.7" (43.5mm)
Diameter 2.7" (68.5mm)
Weight 6.5 oz (184 g)

Description:

The Tamron SP AF Pro teleconverter features improved optical construction, and is designed to be used with lenses that are f/2.8 and of focal lengths of 90mm or greater.

The 2x teleconverter (also known as a tele-extender) will multiply the focal length of the existing lens by 2x, and will cut back the amount of light by 2 f/stops. For example, using a 2x teleconverter with a 300mm lens will effectively increase the focal length to 600mm. A lens set to f/2.8 will now be f/5.6.

This teleconverter is not recommended for lenses wider than 90mm, e.g. 50mm, 28-105mm, etc. However, full AF operation is still only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera's AF sensors. Manual focusing is recommended when using lenses with smaller open f-stop value than those given above. This teleconverter is compatible with the EF lens mount only--not compatible with EF-S lenses.



Model: AF20PN-700
Manufacturer: Tamron

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