Canon RF800mm F11 IS STM RF600mm F11 IS STM RF800mm F11 IS STM Instructions - Page 4

General Precautions

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General Precautions Handling Precautions zz Do not leave the product in excessive heat such as in a car in direct sunlight. High temperatures can cause the product to malfunction. zz 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. zz The interior of the lens may appear to shake, but this is not a malfunction and will not cause any problems. zz Please also read any lens related handling precautions listed in your camera's instruction manual. Shooting Precautions The lens uses a DO* lens. Colored flare might appear around the light source depending on shooting conditions, which is due to DO lens characteristics. zz For scenes where a light source is inside the screen, colored flare may occasionally appear as a halo of light around the light source. zz For scenes where a light source is outside the screen, colored flare may occasionally appear partially inside the screen. You can reduce or prevent these issues with the following steps according to the scene you are shooting. • Use your hand or paneling, an umbrella, etc. to block the light source and placed so that they do not appear in the screen. * "DO" stands for Diffractive Optics. Use of a DO lens provides favorable correction of chromatic aberration that occurs easily in super-telephoto lenses, achieving a more compact and lightweight design while providing good rendering capabilities. ENG-3

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ENG-3
Handling Precautions
z
Do not leave the product in excessive heat such as
in a car in direct sunlight. High temperatures can
cause the product to malfunction.
z
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.
z
The interior of the lens may appear to shake, but
this is not a malfunction and will not cause any
problems.
z
Please also read any lens related handling
precautions listed in your camera’s instruction
manual.
General Precautions
Shooting Precautions
The lens uses a DO* lens. Colored flare might appear
around the light source depending on shooting
conditions, which is due to DO lens characteristics.
z
For scenes where a light source is inside the
screen, colored flare may occasionally appear as
a halo of light around the light source.
z
For scenes where a light source is outside the
screen, colored flare may occasionally appear
partially inside the screen. You can reduce or
prevent these issues with the following steps
according to the scene you are shooting.
• Use your hand or paneling, an umbrella, etc.
to block the light source and placed so that
they do not appear in the screen.
* “DO” stands for Diffractive Optics.
Use of a DO lens provides favorable correction of
chromatic aberration that occurs easily in super-telephoto
lenses, achieving a more compact and lightweight design
while providing good rendering capabilities.