Canon EF 24-70mm f/4L IS USM User Manual - Page 3

Safety Precautions Handling Cautions ●● 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. ●● Do not leave the lens in excessive heat such as in a car in direct sunlight. High temperatures can cause the lens to malfunction. Safety Precautions ●● Do not look at the sun or a bright light source through the lens or camera. Doing so could result in loss of vision. Looking at the sun directly through the lens is especially hazardous. ●● Whether it is attached to the camera or not, do not leave the lens under the sun without the lens cap attached. This is to prevent the lens from concentrating the sun's rays, which could cause a fire. Conventions used in this instruction Warning to prevent lens or camera malfunction or damage. Supplementary notes on using the lens and taking pictures. ENG-2