Canon 25 mm f:3.5, Руководство пользователя

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DESCRIPTIONS
How to take care of your lens
1. Lenses should not be changed in direct sunlight. Turn your back to the sun and hold the
camera in the shadow of your body.
2. Always keep the mounting flange of your camera free from dust or dirt. After dis-
mounting, your lens should be covered with the dust cap instantly to protect the helicoid,
which is the most important part of the lens.
1. Never touch the lens with your finger. In case it becomes necessary to remove dust
from the surface, use a fine, soft brush or reliable lens tissue. If further cleaning is
necessary for removing fingermarks, etc. wrap lens cleaning tissue or lint-free cotton cloth
on tip of a stick and moist alcohol (mixed with ether when possible) and wipe the
surface in a gentle circular motion from center to perimeter. Never wipe with excessive
pressure or you might scratch the surface.
4. Do not store your lens in hot and or humid places. The best way to store your lens is to
keep it in an air-tight container or desiccator with moisture absorbent such as silica gel.
5. Never subject the lens to a sudden, extreme change in temperature or lens cracks may result,
6. Do not attempt to screw-in or unscrew the lens by grasping any other part (especially
knurled focusing ring) but the base.