Canon RF 50mm f/1.2L USM User manual

Instructions

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Thank you for purchasing a Canon product.

Canon RF50mm F1.2 L USM is a large
aperture standard lens for use with EOS R
series cameras.

 “USM” stands for Ultrasonic Motor.

Camera Firmware

Please use the latest version of firmware with the
camera in use. For details on whether the firmware is
the latest version or not, and for details on updating the
firmware, please check the Canon website.

Conventions used in these instructions

Warning to prevent lens or camera malfunction

or damage.

Supplementary notes on using the lens and

taking pictures.

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Safety Precautions

Precautions to ensure that the camera is used
safely. Read these precautions thoroughly. Make
sure all details are observed in order to prevent
risks and injury to the user and other people.

Details pertaining to risks that may

Warning

Do not look directly at the sun or other strong



light sources through a lens. This may result in
loss of sight.
Do not leave a lens in the sun without the lens



cap attached. The lens may concentrate entering
sunlight and cause a malfunction or fire.

Caution

Do not leave the product in places exposed to



extremely high or low temperatures. The product
may cause burns or injury when touched.

result in death or serious injury.

Details pertaining to risks that
may result in injury.

Caution

Do not leave the product in excessive heat such as



in a car in direct sunlight. High temperatures can
cause the product to malfunction.

Details pertaining to risks that may
result in damage to property.

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General Precautions

Handling Precautions

This lens needs to have Canon filters attached to



achieve its dust-resistance and water-resistance
performance.
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.
Please also read any lens related handling



precautions listed in your camera’s instruction
manual.

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