Canon EF 400mm f/2.8L IS III USM EF400mm f/2.8L IS III USM Instructions - Page 13
Two Presets
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Focus Preset Two Presets Hold down the focus preset button to preset two focusing distances. < Preset the Focusing Distance > Focus the lens at a focusing distance you want to preset. Hold down the focus preset button (at least 1 second), and then immediately turn the playback ring left or right to preset the distance in memory for that direction. Use the same steps to preset another distance. < Shoot at the Preset Focusing Distances > Turn the playback ring left or right to move the focus to each of the preset distances. Press the shutter button while the playback ring is turned to shoot at that distance. Beep Sounds (Beeper) ・Two beeps (slow): W hen button held down ・One beep: When presetting a focusing distance ・Two beeps (fast): When the focus moves to the preset focusing distance Focus preset button Hold down Focus preset switch Playback ring ENG-12
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