Canon EF 300mm f/4L IS USM Instruction

Also see for IMAGE STABILIZER ULTRASONIC EF300MM f/4L IS USM: Instructions Instruction User guide Instruction

Contents

ENG-13This device complies with Part 15 of theFCC Rules. Operation is subject to thefollowing two conditions: (1) This devicemay not cause harmful interference, and(2) this device must accept anyinterference received, includinginterference that may cause undesiredoperation.Do not make any changes or modificationsto the equipment unless otherwisespecified in the instructions. If suchchanges or modifications should be made,you could be required to stop operation ofthe equipmet.This equipment has been tested andfound to comply with the limits for a ClassB digital device, pursuant to Part 15 of theFCC Rules. These limits are designed toprovide reasonable protection againstharmful interference in a residentialinstallation. This equipment generates,uses and can radiate radio frequencyenergy and, if not installed and used inaccordance with the instructions, maycause harmful interference to radiocommunications. However, there is noguarantee that interference will not occurin a particular installation. If thisequipment does cause harmfulinterference to radio or televisionreception, which can be determined byturning the equipment off and on, the useris encouraged to try to correct theinterference by one or more of thefollowing measures:• Reorient or relocate the receivingantenna.• Increase the separation between theequipment and receiver.• Connect the equipment into an outlet ona circuit different from that to which thereceiver is conected.• Consult the dealer or an experiencedradio/ TV technician for help.Focal Length and Max. Aperture:300mm, f/4Construction:15 elements in 11 groupsAngle of View (Diagonal, vertical,horizontal extents):8˚15’, 4˚35’, 6˚50’Max. Magnification and PictureField:0.24×, 101 mm × 150 mm (at 1.5 m)Min. Focusing Distance:1.5 m / 4.9 ft. (Macro)Max. Diameter and Length:90 mm ×221 mm / 3.5×8.7inchWeight: 1190 g / 2.6 lb.* The lens length is measured from themount to the front of the lens. Add 21.5mm when including the lens cap anddust cap.* The dimensions and weight are for thelens only.* With this lens, no compensation isnecessary for infrared film.* Product specifications and the externalappearance may be changed withoutnotice.12. Major Specifications"This digital apparatus does notexceed the Class B limits for radionoise emissions from digitalapparatus as set out in theinterference-causing equipmentstandard entitled "Digital Apparatus",ICES-003 of the Industry Canada."

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