Canon Features, Conventions used in this instruction, Thank you for purchasing a Canon product

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.

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