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Promaster 2X Teleconverter for Canon Auto Focus

Promaster 2X Teleconverter for Canon Auto Focus

Used Cat.# 938374
Promaster 2X Teleconverter for Canon Auto Focus

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  • 1Description
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 300 mm lens will effectively increase the focal length to 600 mm. A lens set to f/2.8 will now be f/5.6.

Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is 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.

In the Box
Promaster 2X Teleconverter for Canon Auto Focus
  • Original Box
  • Front & Rear Lens Caps
  • Lens Pouch
  • Instruction Sheet
  • 90-Day B&H Used Warranty
  • Table of Contents
    • 1Description
    Magnification 2x
    Lens Elements/Groups 4 elements
    Length 1.1" (28mm)
    Diameter 2.6" (66mm)
    Weight 3.9 oz (113g)
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