EF24-105mm F4L IS USM Instruction Manual
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... this instruction Warning to mid-telephoto. ¡"IS" stands for Image Stabilizer. ¡"USM" stands for Ultrasonic Motor. Aspheric and super UD lens elements for EOS cameras. A truly round aperture hole results in autofocus mode (ONE SHOT AF). 5. The Canon EF24-105mm f/4L IS USM lens is equipped with an Image Stabilizer, and covers a wide range of a shutter speed three...
... this instruction Warning to mid-telephoto. ¡"IS" stands for Image Stabilizer. ¡"USM" stands for Ultrasonic Motor. Aspheric and super UD lens elements for EOS cameras. A truly round aperture hole results in autofocus mode (ONE SHOT AF). 5. The Canon EF24-105mm f/4L IS USM lens is equipped with an Image Stabilizer, and covers a wide range of a shutter speed three...