Canon Extender EF 1.4X III Instruction Manual

CT1-8569-000© CANON INC. 2010523 4113245ENG Extender EF1.4X III/ EF2X IIIq Lens mount index (on lens)w Lens mount index (on camera)e Lens release leverr Contactst Rubber ringUsable lenses:❇: Using an Extender with this lens may result in incorrect autofocus.If your camera has an AF microadjustment function, do the AF microadjustment.If your camera does not have an AF microadjustment function, focusmanually if the AF precision is way off.* For details on AF microadjustments, see the camera's instruction manual.* Refer to the camera and lens instruction booklets to see if there are any AFcompatibility limitations.* The maximum aperture is indicated in half-stop increments.Thank you for purchasing a Canon product.The high-performance Canon Extender EF1.4X III and Extender EF2X III increasethe focal length of the attached EF lens by 1.4X and 2X respectively.aSafety Precautions• Do not look at the sun or a bright light source through the lens with theextender attached, or with a camera with the extender and lensattached. Doing so could result in visual impairment. In particular, neverlook at the sun directly through the lens with the extender attached, becausethat could result in loss of vision.• Do not leave the lens with the extender attached, or a camera with theextender and lens attached in the sun without the lens cap on. That mayresult in concentrating the sun's rays, causing a fire.• Do not leave the extender in excessive heat such as in a car in directsunlight. High temperatures can cause the extender to malfunction.This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)This device may not cause harmful interference, and (2) this device must accept any interference received,including interference that may cause undesired operation.Do not make any changes or modifications to the equipment unless otherwise specified in the instructions.If such changes or modifications should be made, you could be required to stop operation of the equipment.This equipment has been tested and found to comply with the limits for a class B digital device, pursuant topart 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmfulinterference in a residential installation. This equipment generates, uses and can radiate radio frequencyenergy and, if not installed and used in accordance with the instructions, may cause harmful interference toradio communications.However, there is no guarantee that interference will not occur in a particular installation. If this equipmentdoes cause harmful interference to radio or television reception, which can be determined by turning theequipment off and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures:• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Consult the dealer or an experienced radio/TV technician for help.This Class B digital apparatus complies with Canadian ICES-003.Mounting and dismounting the ExtenderFirst attach the Extender to the lens, then attach it to the camera. To detach it,follow the same procedure in reverse.To detach the Extender from the lens, slide the lens release lever as shown bythe arrow, then turn the Extender counterclockwise.EF1.4X III189mm f/2.8252mm f/4.5280mm f/4280mm f/4280mm f/2.5280mm f/2.8420mm f/5.6420mm f/5.6420mm f/4420mm f/4560mm f/8560mm f/5.6560mm f/4560mm f/4560mm f/4700mm f/6.7700mm f/5.6840mm f/5.6840mm f/5.61120mm f/8140-560mm f/6.7-898-280mm f/5.698-280mm f/5.698-280mm f/498-280mm f/498-280mm f/4420mm f/4560mm f/4700mm f/5.6840mm f/5.61680mm f/8EF2X III270mm f/4360mm f/6.7400mm f/5.6400mm f/5.6400mm f/3.5400mm f/4600mm f/8600mm f/8600mm f/5.6600mm f/5.6800mm f/11800mm f/8800mm f/5.6800mm f/5.6800mm f/5.61000mm f/9.51000mm f/81200mm f/81200mm f/81600mm f/11200-800mm f/9.5-11140-400mm f/8140-400mm f/8140-400mm f/5.6140-400mm f/5.6140-400mm f/5.6600mm f/5.6800mm f/5.61000mm f/81200mm f/82400mm f/11Focal Length & Maximum ApertureLensEF135mm f/2L USMEF180mm f/3.5L Macro USMEF200mm f/2.8L USMEF200mm f/2.8L II USMEF200mm f/1.8L USM ❇EF200mm f/2L IS USMEF300mm f/4L USMEF300mm f/4L IS USMEF300mm f/2.8L USM ❇EF300mm f/2.8L IS USMEF400mm f/5.6L USMEF400mm f/4 DO IS USMEF400mm f/2.8L USM ❇EF400mm f/2.8L II USM ❇EF400mm f/2.8L IS USMEF500mm f/4.5L USM ❇EF500mm f/4L IS USMEF600mm f/4L USM ❇EF600mm f/4L IS USMEF800mm f/5.6L IS USMEF100-400mm f/4.5-5.6L IS USMEF70-200mm f/4L USMEF70-200mm f/4L IS USMEF70-200mm f/2.8L USMEF70-200mm f/2.8L IS USMEF70-200mm f/2.8L IS II USMEF300mm f/2.8L IS II USMEF400mm f/2.8L IS II USMEF500mm f/4L IS II USMEF600mm f/4L IS II USMEF1200mm f/5.6L USM ❇Maximum Aperture with the ExtenderWhen Extender EF1.4X III is attached, the lens maximum aperture will be smaller(darker) by 1 stop. With Extender EF2X III, the maximum aperture will be smallerby 2 stops. In any case, the camera will compensate the exposure automatically.Caution• Do not attach two or more Extenders on the same camera. Doing so willdegrade the optical performance and the camera will not be able to obtainproper exposure readings.• To enhance water and dust resistance, the Extender EF1.4X III and EF2X III havea rubber ring around the mount. As the lens is repeatedly mounted and detached,the rubber ring will leave fine abrasion marks on the outside of the camera mount.This will not affect operation.The rubber ring can be replaced by a Canon service center (a fee will be charged).• Autofocusing slows down when the lens is used with an extender, in order tomaintain the precision of autofocus control.• The Extenders cannot be used with film cameras other than the EOS-1V. Usingan Extender with a film camera other than the EOS-1V may cause misoperation.Major SpecificationsMount: Canon EF mount (Electronically controlled)Lens construction: EF1.4X III: 7 elements in 3 groupsEF2X III: 9 elements in 5 groupsDimensions(Max. dia. × length): EF1.4X III: 72.0 dia. × 27.2 mm / 2.8 × 1.1 inchEF2X III: 72.0 dia. × 52.7 mm / 2.8 × 2.1 inchWeight: EF1.4X III: approx. 225 g / 7.9 oz, EF2X III: approx. 325 g / 11.5 ozCase: EF1.4X III/EF2X III: LP811* All specifications are based on Canon's tests and measurements.* Product specifications and appearance are subject to change without notice.COPY

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