Teleconverter compatibility

edited February 2012 Posted in » Canon Lens Talk
Will the 70-300mm lens work with a teleconverter to get extra reach?


  • @auston - Canon's teleconverters are only designed to work with a select group of "L" lenses. If you're ok with manual focus, then take a look at the teleconverters offered by Tamron and Kenko, however, be aware that you'll also have to deal with loss of light.

    Generally speaking, you'll lose 1 or 2 stops. So if you're shooting at 300mm, normally you could use an aperture of f/5.6. With a teleconverter attached, you'll be closer to f/8 or f/11. This is ok for shooting in extremely bright daylight, but as the light drops, your ability to use fast shutter speeds disappears very quickly.
  • edited February 2012
    Thanks, I'll look in to the two teleconverters you listed.
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