Canon EF 70-300mm f4-5.6L IS USM - Manual (Page 2)

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Dedicated to EOS cameras, the Canon EF70-
300mm f/4-5.6L IS USM lens is a high-
performance telephoto zoom lens equipped
with an Image Stabilizer.
• “IS” stands for Image Stabilizer.
• “USM” stands for Ultrasonic Motor.
4. Ultrasonic motor (USM) for quick and quiet
autofocusing.
5. Manual focusing is available after the subject
comes into focus in autofocus mode (ONE
SHOT AF).
6. The zoom ring can be fixed to keep the lens at
the shortest point.
7. A truly round aperture hole results in a nicer
background blur.
8. Tight seal structure ensures excellent dust-
proof and drip-proof performance.
* Based on [1/focal length] second. Generally, it requires
a shutter speed [1/focal length] second or faster to
prevent camera shake.
Features
1. The Image Stabilizer gives the equivalent
effect of a shutter speed four stops faster*.
The lens also has a second image stabilizer
mode that is optimized for following shots of
moving subjects.
2. UD lens elements for excellent imaging
performance.
3. A fluorine coating has been applied to the
lens’s front and rear lens elements which
allows dust to be wiped from the outside of the
lens more easily compared with previous
lenses.
Thank you for purchasing a Canon product.
Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
COP
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