Canon RF 28mm F2.8 STM, Инструкция по эксплуатации

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ENG-3
Handling Precautions
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Do not leave the product in excessive heat such as
in a car in direct sunlight. High temperatures can
cause the product to malfunction.
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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.
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In order to optimize aperture control, there are
occasions in which the aperture blades will move
during focusing, even when the aperture value is
set for aperture-priority AE or manual exposure,
etc.
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Please also read any lens related handling
precautions listed in your camera’s instruction
manual.
General Precautions
Shooting Precautions
When the camera recovers from the auto power off
status to the shooting-ready status, the front end of
the lens moves in both AF/MF mode and an initial
reset is performed on the focus lens.
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Do not shoot until the initial reset is completed.
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Focus again after recovering from the auto power
off status.
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To maintain the focus position in the shooting-ready
status, set [Auto power off] to [Disable] on the
camera.