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CANON
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PRODUCTS
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EF
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Articles
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Products
Extenders and Extension Tubes
(8)
EF 1.4X III Extender
(5)
EF 2x III Tele-Extender
(6)
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Lenses that can be used with Extender EF1.4X III and EF2X III
Usable lenses:
EF 200mm
f/1.8
L
USM
* 280mm
f
/2.5 400mm
f
/3.5 EF 200mm
f
/2L IS
USM
280mm
f
/2.8 400mm
f
/4 EF 300mm
f
/4L
USM
420mm
f
/5.6 600mm
f
/8
EF
300mm
f
/4L IS USM 420mm f/5.6
What is the Maximum Aperture with the EF 2x III Extender
Please note that if the maximum effective aperture falls below
f
/5.6, AF will not be possible
How to mount and dismount the EF 2x III Extender
EF 2x III Extender : What are the parts and controls - nomenclature?
Specifications for the EF1.4X III and EF2X III Extenders
Please see the dimensions, weights, and other specifications for the
EF
1.4X III and
EF
2X III Extenders.
Lens Specifications with the Extender EF 1.4x II/III or EF 2x II/III
The difference between the current Canon EF Extenders, EF 1.4x III and the EF 1.4x II
The difference between the current Canon
EF
Extenders,
EF
1.4x II and the
EF
2x II, and the previous versions.
What is the Maximum Aperture with the 1.4X III Extender
When the
EF
1.4x III is attached, the lens maximum aperture will be smaller (darker) by 1 stop.
The camera will compensate the exposure automatically.