Canon Extender EF
The Extender EF lenses are a group of teleconverter lenses made by Canon. These lenses are used between any compatible EF type lens and any of the Canon EOS line of cameras. When used with a compatible lens, such as the Canon EF 500mm f/4L IS USM, they will multiply the focal length of the lens by a factor of either 1.4× or 2.0×. This will result in a focal length of 700mm or 1000mm, respectively, with a 500mm lens.
Canon has released six models:
- 1.4×
- 1.4× II
- 1.4× III
- 2×
- 2× II
- 2× III
Read more about Canon Extender EF: Technical Information, Compatibility Information
Famous quotes containing the word canon:
“The greatest block today in the way of woman’s emancipation is the church, the canon law, the Bible and the priesthood.”
—Elizabeth Cady Stanton (1815–1902)