16. Extenders (Sold Separately)

Lens specifications when using extender EF1.4× II/III or EF2× II/III are as follows.

 

 

EF500mm f/4L IS II USM

EF600mm f/4L IS II USM

 

 

EF1.4× II/III

EF2× II/III

EF1.4× II/III

EF2× II/III

Focal length (mm)

 

700

1000

840

1200

Aperture

 

f/5.6 – 45

f/8 – 64

f/5.6 – 45

f/8 – 64

 

Diagonal

3° 30’

2° 30’

3°

2°

Angle of view

Vertical

2°

1° 20’

1° 40’

1° 10’

 

Horizontal

3°

2°

2° 30’

1° 40’

Maximum magnification (×)

0.21

0.31

0.21

0.30

OO 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.

OOWith Extender EF2× II/III attached to the lens, only manual focus is possible. However, with the EOS-1Ds

Mark III, EOS-1Ds Mark II, EOS-1Ds, E S-1D Mark IV, EOS-1D Mark III, EOS-1D Mark II N, EOS-1D Mark II, EOS-1D, EOS-1V/HS camera, autofocusing with the center focusing point is possible.

OOWhen shooting with EOS A2/A2E/5 fitted with either the EF500mm f/4L IS II USM or EF600mm f/4L IS II USM, use –0.5 step exposure compensation when using extender EF1.4× II, and use –1 step exposure

when using extender EF2× II.

OOExtenders cannot be used more than one at a time.

OO Autofocusing is still enabled with extender EF1.4× II/III attached.

OOWhen an extender is attached, the AF speed will become slower to retain proper control.

ENG-19