General Precautions; Handling Precautions - Canon Rf 85Mm F1.4 L Vcm Instruction On Mounting And Use Manual

General Precautions

Handling Precautions

Do not leave the product in excessive heat such as in a car in direct
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sunlight. High temperatures can cause the product to malfunction.
If the lens is taken from a cold environment into a warm one,
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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.
When the lens is not attached to the camera or the power switch of the
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camera is in the off status when the lens is attached, shaking the lens
may cause the internal lens group to shift and noise may occur, but this is
not a malfunction. Although the internal lens group shifts due to vibration
such as when the lens is carried, this will not affect aspects such as
performance.
In order to optimize aperture control, there are occasions in which the
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aperture blades will move during focusing, even when the aperture value
is set for aperture-priority AE or manual exposure, etc.
Please also read any lens related handling precautions listed in your
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camera's instruction manual.
Shooting Precautions
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
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power off] to [Disable] on the camera.
After detaching the lens, or after trying to detach the battery from the
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camera, focus the camera again. Due to the structure of the focus lens
drive mechanism, the focus lens may significantly shift from its original
position. (for RF20mm F1.4 L VCM and RF85mm F1.4 L VCM)
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