ENG-2Safety PrecautionsSafety Precautions●● Do not look at the sun or a bright light sourcethrough the lens or camera. Doing so could result inloss of vision. Looking at the sun directly through thelens is especially hazardous.●● Do not point the lens or camera at the sun orphotograph it. This is because the lens concentratesthe sun’s rays even when the sun is outside the imagearea or when shooting with backlight, which couldcause malfunction or fire.●● Whether it is attached to the camera or not, donot leave the lens under the sun without thelens cap attached. This is to prevent the lens fromconcentrating the sun’s rays, which could cause a fire.Conventions used in this instructionWarning to prevent lens or camera malfunctionor damage.Supplementary notes on using the lens andtaking pictures.Handling Cautions●● If the lens is taken from a cold environment into awarm one, condensation may develop on the lenssurface and internal parts. To prevent condensationin this case, first put the lens into an airtight plastic bagbefore taking it from a cold to warm environment. Thentake out the lens after it has warmed gradually. Do thesame when taking the lens from a warm environmentinto a cold one.●● Do not leave the lens in excessive heat such as in acar in direct sunlight. High temperatures can causethe lens to malfunction.●● When the lens is mounted on a camera, it isrecommended that you also hold the camera by thelens, including when mounting it on a tripod.Usage Precautions●● When using this lens, please check the Canon websitefor the latest camera firmware. If the camera’s firmwareis not the latest version, be sure to update to the latestfirmware.●● For details on updating firmware, please check theCanon website.BNOX