May 2008
Beginner
297 pages
9h 14m
English
Content preview from Canon® EOS Digital Photography Photo Workshop
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7.1. EXTEND THE RANGE OF L SERIES LENSES
Suppose you've invested in a Canon EF 200mm f/2L IS USM lens, and you're finding that you'd like just a little more length on the focal length. One good option, barring going out and buying a longer lens, is to consider one of Canon's lens extenders. These are small devices that you mount to your camera just as you do a lens, and then you mount your lens onto them.
Figure 7-1. The Canon Extender EF 2x II attaches in-between your lens and camera and increases the lens's range by a factor of two. The extender in this photo is attached to the base of an EF 70-200mm f/2.8L lens. ©Serge Timacheff
Canon offers two extenders that effectively extend the range of your lens by factors of 1.4x and 2.0x, the Extender EF 1.4x II and the Extender EF 2x II, shown in 7-1. Thus, you can extend the focal range of your 200mm L-series lens to 280mm with the 1.4 extender and to 400mm with the 2.0 model — at a fraction of the price of buying a new lens.
These Canon extenders can be used with a variety of both fixed-focus and zoom lenses, including the following:
EF 70-200mm f/2.8L
EF 70-200mm f/2.8L IS
EF 70-200mm f/4.0L
EF 70-200mm f/4.0L IS USM
EF 100-400mm f/4.5-5.6L IS
Any fixed-focus lens that is 135mm or longer (except for the 135mm f/2.8 Softfocus)
With an extender attached, the lens operates normally with a couple of notable exceptions. The autofocus will ...
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