Thank you for purchasing a Canon product.
The Canon
●“IS” stands for Image Stabilizer.
●“USM” stands for Ultrasonic Motor.
Handling Cautions
●If the lens is taken from a cold environment into a warm one, condensation may develop on the lens surface and internal parts. To prevent condensation in this case, first put the lens into an airtight plastic bag before taking it from a cold to warm environment. Then take out the lens after it has warmed gradually. Do the same when taking the lens from a warm environment into a cold one.
●Do not leave the lens in excessive heat such as in a car in direct sunlight. High temperatures can cause the lens to malfunction.
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 Image Stabilizer gives the equivalent effect of a shutter speed two stops* faster. A second image stabilizer mode that is optimized for continuous shooting (MODE 2) is provided.
2.Fluorite and super UD lens elements for truly exceptional imaging capability.
3.Ultrasonic motor (USM) for fast, quiet autofocus.
4.Manual focusing is available after the subject comes into focus in autofocus mode (ONE SHOT AF).
5.Adjustable zoom ring touch lets you lock at any focal length.
6.Can be used with EF1.4⋅ II/EF2⋅ II extenders.
*Based on [1/focal length] second.
Generally, it requires a shutter speed [1/focal length] second or faster to prevent camera shake.