Instruction/ maintenance manual of the product EF300MM F/4L USM Canon
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EF135mm f/2L USM EF200mm f/2.8L II USM EF300mm f/4L USM EF400mm f/5.6L USM Instructions ENG C OP Y.
ENG-1 Thank y ou f or purc hasing a Canon pr oduct. The Canon EF135mm f/2L USM, the EF200mm f/2.8L II USM, the EF300mm f/4L USM, and the EF400mm f/5.6L USM are high-performance telephoto lenses designed for EOS cameras. ¡ “USM” stands for Ultr asonic Motor .
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 Distance scale ( → 5, 6) Depth-of-Field scale ( → 6) Contacts ( → 4) Focus mode switch ( → 4) Hood mount* 1 ( → 8) Lens mount index ( → 4) Filter mounting thread ( → 9) Infrared in.
ENG-4 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 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 4. Infinity Compensation Mark To compensate f or shifting of the infinity f ocus point that results from changes in temperature. The infinity position at normal temperature is the point at which the vertical line of the L mar k is aligned with the distance indicator on the distance scale.
ENG-6 6. Depth-of-Field Scale The depth of field is the distance in front of and behind the plane of focus on the subject that appears sharp. The depth of field is indicated by the area between the depth-of-field scale lines below the distance scale. The number on the scale is the F v alue.
ENG-7 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 betw een vertical and hor izontal positions . The EF200mm f/2.8L II USM lens can be used with the A II (B) tripod mount r ing, sold separately .
ENG-8 8. Hood EF135mm f/2L USM • EF200mm f/2.8L II USM Attach and align the hood to the hood mount on the front of the lens, and turn the hood as shown by the arrow to secure it. The hood can be rev erse-mounted on the lens for storage . EF300mm f/4L USM Bring the hood out from the end of the lens until it stops.
ENG-9 9. Filters (Sold separatel y) Y ou can attach filters to the filter mounting thread on the front of the lens. ¡ If you need a polarizing filter , use the Canon Circular P olarizing Filter . ¡ To adjust the polarizing filter, first remov e or store the lens hood.
ENG-10 11. Extension T ubes (Sold separatel y) Y ou can attach Extension T ube EF12 II or EF25 II for magnified shots. The shooting distance and magnification are shown below . Camera-to-Subject Magnification Distance (mm) Near F ar Near F ar EF12 II 691 1661 0.
ENG-11 12. Extenders (Sold separatel y) With Extender EF1.4X ll or EF2X ll attached, the lens specifications will change as follo ws: EF135mm f/2L USM F ocal length Aper ture Angle of view Maximum magnification ( × ) (mm) Diagonal V er tical Hor izontal EF1.
ENG-12 Extenders (Sold separately) When an Extender is attached, the AF speed will become slower b y design to retain proper AF control. EF300mm f/4L USM ¡ With Extender EF2X II attached to the lens, only manual f ocus is possible.
ENG-13 Specifications ¡ The lens length is measured from the mount surface to the front end of the lens. Add 21.5 mm when including the lens cap and dust cap. ¡ The size and weight listed are f or the lens only , except as indicated. ¡ Aper ture settings are specified on the camera.
© CANON INC. 2002 CT1-7511-013 2009.7 C OP Y.
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