Canon EOS 5D Mark IV + 70-200mm, Инструкция по эксплуатации

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ENG-16
14. Extenders (Sold Separately)
Lens specifications when using extender EF1.4x III or EF2x III are as follows.
Item
Extender EF1.4x III Extender EF2x III
Focal length (mm)
98 - 280 140 - 400
Aperture
f/4 - 45 f/5.6 - 64
Angle of view
Diagonal
25°20′ - 8°50′ 16°20′ - 6°10′
Vertical
13°50′ - 4°55′ 9°10′ - 3°30′
Horizontal
20°50′ - 7°20′ 13°40′ - 5°10′
Maximum magnification (x)
0.30 0.44
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Attach the extender to the lens, and then attach the lens to the camera. To remove it, reverse the order.
Errors may occur if you attach the extender to the camera first.
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Only one extender can be used.
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Autofocusing is still enabled with Extender EF1.4X III/EF2X lIl attached.
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When an extender is attached, the AF speed will become slower to retain proper control.