With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follows:
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| With EF1.4X ll Extender | With EF2X ll Extender | |
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Focal length (mm) |
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| 252 | 360 | |
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| in | 1 | stops | f/5 – 45 | f/7.1 – 64 | |
Aperture | 3 | |||||
in | 1 | stops | f/4.5 – 45 | f/6.7 – 64 | ||
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| 2 | |||||
| Diagonal | 9°50’ | 6°50’ | |||
Angle of view | Vertical | 5°30’ | 3°50’ | |||
| Horizontal | 8°10’ | 5°40’ | |||
Maximum magnification (⋅) | 1.4 | 2.0 | ||||
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• First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the reverse order. If you attach the lens to the camera first, misoperation may occur.
•With the EF1.4X II Extender attached, autofocusing is enabled from 0.8 m/2.6 ft. to infinity. Autofocus mode cannot be used to take pictures closer than 0.8 m/2.6 ft. due to the relation with the effective F value, so use manual focusing.
•If you use an Extender on the lens mounted on a EOS A2/A2E/5, set the exposure compensation to
•Only one Extender can be attached to the lens and camera.