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Thank you for purchasing a Canon product.
The Canon EF135mm f/2L USM, the EF200mm
f/2.8L II USM, the EF300mm f/4L USM, and the
EF400mm f/5.6L USM are high-performance
telephoto lenses designed for EOS cameras.
¡“USM” stands for Ultrasonic Motor.
Features
1. UD lens elements (in the EF135mm f/2L
USM, the EF200mm f/2.8L II USM, the
EF300mm f/4L USM, and the EF400mm
f/5.6L USM) and super UD lens elements (in
the EF400mm f/5.6L USM) for excellent
imaging performance.
2. Ultrasonic motor (USM) for quick and quiet
autofocusing.
3. Manual focusing is available after the subject
comes into focus in autofocus mode (ONE
SHOT AF).
4. The lens is compatible with Extender EF1.4X
ll and EF2X ll.
Conventions used in this instruction
Warning to prevent lens or camera
malfunction or damage.
Supplementary notes on using the lens
and taking pictures.