Canon EF 400mm f/2.8L IS II USM Instruksi - Halaman 2

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Canon EF 400mm f/2.8L IS II USM Instruksi
Thank you for purchasing a Canon product.
The Canon EF400mm f/4 DO IS USM lens is a
high-performance, super telephoto lens
dedicated to Canon EOS cameras. Besides
having an Image Stabilizer, it is the world's
first camera lens incorporating a multi-layer
diffractive optical element (DO).
The multi-layer diffractive optical element is a
revolutionary element having the
characteristics of both fluorite and aspherical
elements. It greatly contributes to the lens'
compactness, light weight, and high image
quality.
• "DO" stands for Diffractive Optics.
• "IS" stands for Image Stabilizer.
• "USM" stands for Ultrasonic Motor.
Conventions used in this instruction
Warning to prevent lens or camera malfunction
or damage.
Supplementary notes on using the lens and
taking pictures.
Features
1. The multi-layer diffractive optical element effectively
corrects chromatic aberrations prone to occur in super
telephoto lenses. It provides high image quality while
maintaining compactness and light weight.
2. The Image Stabilizer gives the equivalent effect of a
shutter speed two stops faster*.
The lens also has a second image stabilizer mode that is
optimized for following shots of moving subjects.
3. Ultrasonic motor (USM) for quick and quiet autofocusing.
4. Manual focusing is available after the subject comes into
focus in autofocus mode (ONE SHOT AF).
5. The AF Stop button for stopping the AF operation at
anytime.
6. The lens is compatible with Extender EF1.4X ll and
EF2X ll.
7. Tight seal structure ensures excellent dust-proof and
drip-proof performance.
8. Designed for lighter weight with major parts made of
magnesium alloy.
* Based on [1/focal length] second. Generally, it requires
a shutter speed [1/focal length] second or faster to
prevent camera shake.
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