Instruction/ maintenance manual of the product EF400MM Canon
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EF400mm f/4 DO IS USM Instruction ENG C OP Y.
ENG-1 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 m ulti-layer diffractive optical element (DO).
ENG-2 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.
ENG-3 Nomenc lature Distance scale ( → 6) Strap mount ( → 4) Orientation locking knob ( → 11) Drop-in filter ( → 12) Lens mount index ( → 4) Contacts ( → 4) Focus mode switch ( → 5) Focu.
ENG-4 • After detaching the lens, place the lens with the rear end up to prev ent the lens surface and electrical contacts from getting scratched. • If the contacts get soiled, scratched, or hav e fingerpr ints on them, corrosion or faulty connections can result.
ENG-5 After autofocusing in ONE SHO T AF mode, focus manually by pressing the shutter b utton halfway and turning the focusing ring. (Full-time manual f ocus) If you autof ocus outside the set focusing distance r ange, the lens ma y stop focusing at the start of the focusing r ange; how ev er, this is not a malfunction.
ENG-6 4. AF Stop Button During autofocus operation, y ou can press the AF stop button to temporarily pause autof ocus. If the shutter button is still pressed halfw ay when the AF stop button is released, autof ocusing will continue as bef ore.
ENG-7 6. Image Stabilizer Settings Y ou can use the image stabilizer in AF or MF mode. Select the stabilizer mode. • MODE 1: Corrects vibrations in all directions.
ENG-8 7. Tips on Using the Image Stabilizer ● MODE 1 ● MODE 2 The image stabilizer in this lens is eff ective f or hand-held shots under the following conditions. • In semi-darkened areas such as indoors or outdoors at night. • In locations where flash photograph y is prohibited, such as ar t museums and theater stages.
ENG-9 Tips on Using the Image Stabilizer • The Image Stabilizer cannot compensate f or a b lurred shot caused b y a subject that moved. • Set the ST ABILIZER switch to when you are taking pictures using the Bulb setting (long e xposures). If the ST ABILIZER switch is set to , the image stabilizer function ma y introduce errors.
ENG-10 The dedicated Lens Hood ET -120 helps to prev ent 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 tur ning it counterclockwise. Fit the hood onto the lens hood mount, and tighten the locking knob to fix it in place.
ENG-11 9. Using the T ripod Mount Adjusting the Rev olving Mount Y ou can loosen the or ientation lock-knob on the tripod mount to allow it to rotate as needed to fit a par ticular camera model f or switching between v er tical and horizontal positions.
ENG-12 10. Drop-In Filter s The lens comes with the drop-in Gelatin Filter Holder 52 holding a glass filter . The holder accepts commercially-av ailable gelatin filters. 14mm 14mm 47mm 47mm Removing and Installing To remov e the drop-in filter , press in the left and r ight lock b uttons and pull the filter holder straight up out of the slot.
ENG-13 11. Extenders (Sold separately) • First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the re verse order . If y ou attach the lens to the camera first, misoperation may occur . • With Extender EF2X II attached to the lens, only manual f ocus is possible.
ENG-14 Camera-to-Subject Magnification Distance (mm) Near F ar Near Far EF12 II 2870 13384 0.16 × 0.03 × EF25 II 2424 6549 0.20 × 0.07 × 13. Case Belt Ke yhole Lever Lid Y ou can attach Extension T ube EF12 II or EF25 II for magnified shots . The shooting distance and magnification are shown below .
ENG-15 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’ V er tical: 3°30’ Horizontal: 5°10’ Min. Focusing Distance 3.5 m Max. Magnification & Field of view 0.
© CANON INC. 2002 CT1-7531-006 2009.7 C OP Y.
An important point after buying a device Canon EF400MM (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Canon EF400MM yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Canon EF400MM - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Canon EF400MM you will learn all the available features of the product, as well as information on its operation. The information that you get Canon EF400MM will certainly help you make a decision on the purchase.
If you already are a holder of Canon EF400MM, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Canon EF400MM.
However, one of the most important roles played by the user manual is to help in solving problems with Canon EF400MM. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Canon EF400MM along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
