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The Canon Extender EF 2x III is a compact and affordable extender which increases the focal length of Canon L-series telephoto or telephoto zoom lens’ by a factor of 2x, with higher AF accuracy making it ideal for press, sports and nature photography. It is highly resistant to dust and water for use in harsh conditions and the built in micro computer enables effective communication between lens and camera. The lens coatings are optimised to minimise ghosting and flare plus its fluorine coating keeps the lens surface clean from water spots and fingerprints.
Extender EF 2x Compatibility Chart
Lens Attachment
Focal Length (mm)
f-stop (f)
Max. Magnification (x)
AF
EF 135mm f/2L USM
270
4 ~ 64
0.38
O
EF 180mm f/3.5L Macro USM
360
6.7*1~ 64
2.0
X
EF 200mm f/1.8L USM
400
3.5 ~ 45
0.18
O
EF 200mm f/2L IS USM
400
5.6 ~ 64
0.24
O*4
EF 200mm f/2.8L II USM
400
5.6 ~ 64
0.32
O
EF 300mm f/2.8L IS USM
600
5.6 ~ 64
0.28
O
EF 300mm f/4L IS USM
600
8 ~ 64
0.47
X*4*5
EF 400mm f/2.8L IS USM
800
5.6 ~ 64
0.31
O
EF 400mm f/4L DO IS USM
800
8 ~ 64
0.24
X*4*5
EF 400mm f/5.6L USM
800
11 ~ 64
0.18
X
EF 500mm f/4L IS USM
1,000
8 ~ 90
0.25
X*4*5
EF 600mm f/4L IS USM
1,200
8 ~ 90
0.24
X*4*5
EF 800mm f/5.6L IS USM
1,600
11 ~ 64
0.28
X
EF 1200mm f/5.6L USM
2,400
11 ~ 64
0.18
X
EF 70-200mm f/2.8L USM
140 ~ 400
5.6 ~ 64
0.33
O*2
EF 70-200mm f/2.8L IS USM
140 ~ 400
5.6 ~ 64
0.33
O*2
EF 70-200mm f/2.8L IS II USM
140 ~ 400
5.6 ~ 64
0.33
O*2
EF 70-200mm f/4L USM
140 ~ 400
8 ~ 64
0.45
X*4
EF 70-200mm f/4L IS USM
140 ~ 400
8 ~ 64
0.45
X*4
EF 100-400mm f/4.5-5.6L IS USM
200 ~ 800
9.5 ~ 64
0.41
X*5
(O =possible X =impossible)
*1
Data based on EOS models with exposures displayed in 1/2 stop increments. It varies slightly with the EOS-1v, EOS-1N, EOS-1 and EOS-3.
*2
If the EF 70-200mm f/2.8L USM lens is attached to an EOS camera having multiple focusing points and an Extender is attached to the lens, only the center focusing point will be usable for AF.
*3
The autofocusing range is from 0.8m/2.6ft. to infinity.
*4
With the EOS-1D series, EOS-1v and EOS-3, AF is possible, but with the center focusing point only.
*5
The Image Stabilizer does not operate with the following cameras: EOS 650, 620, 630/600, RT, 700, 750, 850, EOS-1, A2/A2E, 10s, Elan, Rebel/Rebel S, Rebel II/Rebel SII.
Type
Canon EF
Magnification (x)
2.0
For use with
Canon
Weight: 0.90
Canon EF 2x III Extender
Front and Rear Lens Cap
Users' Manual