Specifications

ManualsBrandsCanon ManualsCamera Lens300X

EF300mm f/4L IS USM

Instruction

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Summary of content (15 pages)

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EF300mm f/4L IS USM C Y P O ENG Instruction
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Thank you for purchasing a Canon product. The Canon EF300mm f/4L IS USM lens is a high-performance telephoto zoom lens for EOS cameras, and it is equipped with an Image Stabilizer. • "IS" stands for Image Stabilizer. • "USM" stands for Ultrasonic Motor. C Conventions used in this instruction Warning to prevent lens or camera malfunction or damage. Features 1. The Image Stabilizer gives the equivalent effect of a shutter speed two stops faster*.
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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.
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Nomenclature Focusing ring (→ 4) Distance scale (→ 5) Built-in lens hood (→ 10) Distance index (→ 5) Focus mode switch (→ 4) Lens mount index (→ 4) C Filter mounting thread (→ 10) Y P O Contacts (→ 4) Image stabilizer mode selector switch (→ 6) Tripod mount (→ 9) Image stabilizer switch (→ 6) Orientation locking knob (→ 9) Focusing distance range selection switch (→ 5) For detailed information, reference page numbers are provided in parentheses (→ **).
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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.
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3. Switching the Focusing Distance Range 4. Infinity Compensation Mark Infinity compensation mark Distance index You can set the focusing distance range to 1.5 m/4.9 ft. to infinity or 3 m/9.8 ft. to infinity. By setting the suitable focusing distance range, the actual autofocusing time can be shorter. C If you autofocus outside the set focusing distance range, the lens may stop focusing at the start of the focusing range; however, this is not a malfunction.
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5. 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.
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6. 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.
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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 when you are using a tripod. If the Stabilizer switch is set to , the image stabilizer function may introduce errors. • 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.
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7. 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 Use the following procedures to remove and attach the tripod mount. C Loosen the orientation locking knob. Y P O Rotate the tripod mount and align the mounting indicator on the tripod mount with the one on the lens.
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8. Hood 9. Filters (Sold separately) You can attach filters to the filter mounting thread on the front of the lens. • If you need a polarizing filter, use the Canon Circular Polarizing Filter (77mm). • To adjust the polarizing filter, first store the lens hood. The built-in lens hood can reduce unwanted reflections and also protects the front of the lens from rain, snow, dust, and other substances.
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10. Extension Tubes (Sold separately) 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 1338 7795 1216 3946 Magnification Near 0.30× 0.37× Far 0.04× 0.09× Manual focusing is recommended for accurate focusing. C 11. Close-up Lenses (Sold separately) Attaching a 500D (77mm) Close-up Lens enables close-up photography. Magnification will be 0.82× – 0.59×.
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12. 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 420 600 f/5.6 – f/45 f/8 – f/64 Diagonal 6°10’ 4°10’ Vertical 3°20’ 2°20’ 5° 3°30’ Horizontal Maximum magnification (×) 0.33 Y P O 0.47 • First attach the Extender to the lens, then attach the lens to the camera. Detach it from the camera in the reverse order.
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Specifications Focal Length & Max. Aperture 300 mm, f/4 Lens Construction 15 elements in 11 groups Min. Aperture f/32 Angle of View Diagonal: 8°15’ Min. Focusing Distance 1.5 m / 4.9 ft. Max. Magnification & Field of view 0.24 × , 101 × 150 mm / 4.0 × 5.9 inch (at 1.5 m) Filter Diameter 77 mm Max. Diameter & Length 90 × 221 mm / 3.5 × 8.7 inch Weight 1190 g / 42.