400mm f2.8 IS / Discuss

Ludovic Hirlimann    says:

From pages ENG-8 and ENG-9 of the Canon Manual :

If a particular focusing position is stored in the lens's memory, the focus can be set instantly to the stored position, even when pictures are being taken of other subjects.This feature can be used in both AF and MF focus mode.

1) set the focus preset switch to | or ((- .
2) Press the shuter button halfway and set the focus to the position you want to store in the lens's memory.
3) Press the focus preset button. The focusing position is now stored in the memory.
* if the focus preset switch is set to ((-, the electronic tone, "pip" will sound.
4) Rotate the focus recall ring right or left and then press the shutter button fully to take the picture.
* The focus is set to the preset position
* if the focus preset switch is set to ((-, the camera emits two short beeps when it has focused.

* Release the shutter button when you turn the focus recall ring. If the AF mode is set to ONE SHOT AF, the exposure setting locks when you press the shutter button halfway. Consequently, the exposure may not be set correctly if you are holding the shutter button halfway down as you turn the focus recall ring.
* if you are not going to use the focus preset, set the focus preset to O.

In the following sitations, the distance scale may move slightly left or right for a moment. This will not affect the photographed image.
* When you press the focus preset button
* When you turn the focus recall ring