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Canon EF400MM Instruction
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Canon EF400MM Instruction

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EF400mm f/4 DO IS USM
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Instruction

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  • Page 1 EF400mm f/4 DO IS USM Instruction...
  • Page 2 Thank you for purchasing a Canon product. The Canon EF400mm f/4 DO IS USM lens is a high-performance, super telephoto lens dedicated to Canon EOS cameras. Besides having an Image Stabilizer, it is the world's first camera lens incorporating a multi-layer diffractive optical element (DO).

  • Page 3: Safety Precautions

    a Safety Precautions a Safety Precautions • Do not look at the sun or a bright light source through the lens or camera. Doing so could result in loss of vision. Looking at the sun directly through the lens is especially hazardous. •...

  • Page 4: Table Of Contents

    Nomenclature Hood mount (→ 10) AF stop button (→ 6) Focus mode switch (→ 5) Image stabilizer switch (→ 7) Image stabilizer mode selector switch (→ 7) For detailed information, reference page numbers are provided in parentheses Focusing ring (→ 5) Focusing distance range selection switch (→...

  • Page 5: Strap Mount

    If the rubber ring becomes worn, it is replaceable by a Canon Service Center at cost. Attaching the strap Thread the end of the strap through the strap mount on the lens and then back through the clasp on the strap.

  • Page 6: Focus Mode Switch

    2. Setting the Focus Mode To shoot in autofocus (AF) mode, set the focus mode switch to AF. To use only manual focusing (MF), set the focus mode switch to MF, and focus by turning the focusing ring. The focusing ring always works, regardless of the focus mode.

  • Page 7: Af Stop Button

    4. AF Stop Button During autofocus operation, you can press the AF stop button to temporarily pause autofocus. If the shutter button is still pressed halfway when the AF stop button is released, autofocusing will continue as before. • With the EOS 630/600, RT, A2/A2E/5, or 10S/10 set to the AI Servo AF mode and continuous shooting, AF will not resume even after you let go of the AF stop button.
  • Page 8 6. Image Stabilizer Settings You can use the image stabilizer in AF or MF mode. Set the STABILIZER switch • If you are not going to use the image stabilizer function, set the switch to Select the stabilizer mode. • MODE 1: Corrects vibrations in all directions.
  • Page 9 7. Tips on Using the Image Stabilizer The image stabilizer in this lens is effective for hand-held shots under the following conditions. ● MODE 1 • In semi-darkened areas such as indoors or outdoors at night. • In locations where flash photography is prohibited, such as art museums and theater stages.
  • Page 10 Tips on Using the Image Stabilizer • The Image Stabilizer cannot compensate for a blurred shot caused by a subject that moved. • Set the STABILIZER switch to taking pictures using the Bulb setting (long exposures). If the STABILIZER switch is set to the image stabilizer function may introduce errors.

  • Page 11: Hood Mount

    8. Hood The dedicated Lens Hood ET-120 helps to prevent stray light from entering the lens and protects the front of the lens from rain, snow or dust. To attach the hood, loosen the hood locking knob by turning it counterclockwise. Fit the hood onto the lens hood mount, and tighten the locking knob to fix it in place.

  • Page 12: Tripod Mount

    9. Using the Tripod Mount Adjusting the Revolving Mount You can loosen the orientation lock-knob on the tripod mount to allow it to rotate as needed to fit a particular camera model for switching between vertical and horizontal positions. Detaching First remove the lens from the camera and then remove the tripod mount from the lens as shown below.

  • Page 13: Drop-In Filter

    10. Drop-In Filters The lens comes with the drop-in Gelatin Filter Holder 52 holding a glass filter. The holder accepts commercially-available gelatin filters. Removing and Installing To remove the drop-in filter, press in the left and right lock buttons and pull the filter holder straight up out of the slot.
  • Page 14 11. Extenders (Sold separately) With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follows: Item Focal length (mm) Aperture Diagonal Angle of view Vertical Horizontal Maximum magnification (×) • First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the reverse order.
  • Page 15 12. Extension Tubes You can attach Extension Tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below. Camera-to-Subject Distance (mm) Near EF12 II 2870 13384 EF25 II 2424 6549 Manual focusing is recommended for accurate focusing.

  • Page 16: Specifications

    • The size and weight listed are for the lens only, except as indicated. • Closeup Lenses 250D/500D cannot be attached. • Aperture settings are specified on the camera. • All data listed is measured according to Canon standards. • Product specifications and appearance are subject to change without notice. 400mm, f/4...
  • Page 17 CT1-7531-006 © CANON INC. 2002 2009.7...

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