Canon EF 200-400mm f4L IS USM Extender 1.4x - Manual (Page 24)

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18. Extenders (Sold Separately)
Lens specifications when using extender EF1.4x II/III or EF2x II/III are as follows.
When the internal extender is set at 1x
Extender EF1.4x II/III Extender EF2x II/III
WIDE TELE WIDE TELE
Focal length (mm) 280 560 400 800
Aperture f/5.6-45 f/5.6-45 f/8-64 f/8-64
Angle of view
Diagonal 8°50′ 4°25′ 6°10′ 3°05′
Vertical 4°55′ 2°25′ 3°30′ 1°40′
Horizontal 7°20′ 3°40′ 5°10′ 2°35′
Maximum magnification (x) 0.15 0.22 0.21 0.31
When the internal extender is set at 1.4x
Extender EF1.4x II/III Extender EF2x II/III
WIDE TELE WIDE TELE
Focal length (mm) 392 784 560 1120
Aperture f/8-64 f/8-64 f/11-91 f/11-91
Angle of view
Diagonal 6°20′ 3°10′ 4°25′ 2°10′
Vertical 3°30′ 1°45′ 2°25′ 1°15′
Horizontal 5°15′ 2°40′ 3°40′ 1°50′
Maximum magnification (x) 0.21 0.3 0.3 0.44
COP
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