Canon EF600mm f/4L IS II USM, Инструкция по эксплуатации, Страница: 27 / 29

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18. Extenders (Sold Separately)
Use an extender EF1.4× III or EF2× III to shoot
a larger image of a subject. Lens specifications
when using an extender are as follows.
EF1.4× III EF2× III
Focal length (mm) 840 1200
Aperture f/5.6 – 45 f/8 – 64
Angle of view
Horizontal 2° 30’ 1° 40’
Vertical 1° 40’ 1° 10’
Diagonal 3° 2°
Maximum magnification (×) 0.21 0.31
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Attach the extender to the lens, and then attach
the camera. To detach it, reverse the order.
Errors may occur if you attach the extender to
the camera first.
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Extenders cannot be used more than one at a
time.
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If using an extender EF2× III, the maximum
aperture is then f/8 and cameras that can
shoot using AF are limited. Please refer to the
camera’s instructions for details.
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When an extender is attached, the AF speed will
become slower to retain proper control.
19. Extension Tubes (Sold Separately)
Use an extension tube EF12 II or EF25 II to get
closer to a subject and shoot a larger image.
Lens specifications when using an extension
tube are as follows.
EF25 II
Close distance Long distance
Focusing distance range (mm) 3757 29435
Magnification (×) 0.18 0.02
Close distance Long distance
Focusing distance range (mm) 3382 14187
Magnification (×) 0.21 0.05
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MF mode is recommended for accurate focusing.
EF12 II