EF400mm f/4 DO IS USM C Y P O ENG Instruction
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). The multi-layer diffractive optical element is a revolutionary element having the characteristics of both fluorite and aspherical elements.
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. • Whether it is attached to the camera or not, do not leave the lens under the sun without the lens cap attached. This is to prevent the lens from concentrating the sun’s rays, which could cause a fire. • Do not stand on the lens case. Falling off the case could result in injury.
Nomenclature Hood mount (→ 10) Focusing ring (→ 5) Focusing distance range selection switch (→ 5) Distance scale (→ 6) Strap mount (→ 4) Drop-in filter (→ 12) Rubber ring (→ 4) AF stop button (→ 6) Focus mode switch (→ 5) C Y P O Contacts (→ 4) Lens mount index (→ 4) Image stabilizer switch (→ 7) Tripod mount (→ 11) Image stabilizer mode selector switch (→ 7) Tripod collar index (→ 11) Orientation locking knob (→ 11) For detailed information, reference page numbers are provided in parentheses (→ *
1. Mounting and Detaching the Lens See your camera’s instructions for details on mounting and detaching the lens. • After detaching the lens, place the lens with the rear end up to prevent the lens surface and electrical contacts from getting scratched. • If the contacts get soiled, scratched, or have fingerprints on them, corrosion or faulty connections can result. The camera and lens may not operate properly. • If the contacts get soiled or have fingerprints on them, clean them with a soft cloth.
2. Setting the Focus Mode 3. Switching the Focusing Distance Range 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. C After autofocusing in ONE SHOT AF mode, focus manually by pressing the shutter button halfway and turning the focusing ring. (Full-time manual focus) Y P O You can set the focusing distance range to 3.
4. AF Stop Button • The AF stop function also works in AI Servo AF mode. • By setting the camera's Custom Function, you can change the AF stop button's function. For details, see the camera's instruction manual. 5. Infinity Compensation Mark Infinity compensation mark During autofocus operation, you can press the AF stop button to temporarily pause autofocus. Y P O If the shutter button is still pressed halfway when the AF stop button is released, autofocusing will continue as before.
6. Image Stabilizer Settings You can use the image stabilizer in AF or MF mode. Set the STABILIZER switch to . • If you are not going to use the image stabilizer function, set the switch to . Y P O Select the stabilizer mode. • MODE 1: Corrects vibrations in all directions. It is mainly effective for shooting still subjects.
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 ● MODE 2 C • 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. • In situations where your footing is uncertain. • In situations where fast shutter settings cannot be used. Y P O • When panning subjects in motion.
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 when you are taking pictures using the Bulb setting (long exposures). If the STABILIZER switch is set to , the image stabilizer function may introduce errors. • The Image Stabilizer might not be fully effective in the following cases: • You shoot while riding on a bumpy road. • You move the camera dramatically for a panning shot in Mode 1.
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. C Y P O 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. Use the same procedure, in reverse, to remove the hood.
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. To attach the tripod mount, reverse the procedure. C Loosen the orientation locking knob.
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. Using a Gelatin Filter 14mm 14mm 47mm Removing and Installing C 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. To install the drop-in filter, push the filter holder straight down into the slot until it clicks into place. Y P O .
11. Extenders (Sold separately) With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follows: Item With EF1.4X ll Extender Focal length (mm) Aperture Angle of view With EF2X ll Extender 560 800 f/5.6 – 45 f/8 – 64 Diagonal 4°25’ 3°5’ Vertical 2°25’ 1°40’ Horizontal 3°40’ 2°35’ Maximum magnification (×) 0.17 Y P O 0.24 • First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the reverse order.
12. Extension Tubes (Sold separately) 13. Case You can attach Extension Tube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below. EF12 II EF25 II Camera-to-Subject Distance (mm) Near Far 2870 13384 2424 6549 Belt Magnification Near 0.16× 0.20× Far 0.03× 0.07× Manual focusing is recommended for accurate focusing. C Lid Keyhole Y P O Lever When putting the lens into its case, follow the procedure below.
Specifications Focal Length & Max. Aperture 400mm, f/4 Lens Construction 17 elements in 13 groups Min. Aperture f/32 Angle of View Diagonal: 6°10’ Min. Focusing Distance 3.5 m Max. Magnification & Field of view 0.12×, 197 × 296mm/7.7× 11.6 inch (at 3.5 m) Filter Drop-in 52-series Max. Diameter & Length 128 dia. × 232.7mm/5 dia. × 9.1 inch Weight 1940g/67.
C CT1-7531-006 Y P O © CANON INC. 2002 2009.
