What Is an EF- S Lens?ID : 8200598300 _ EN _ 12 Solution Canon's EF-S lenses have adopted an optimized optical system and mechanical structure to accommodate an APS-C size sensor that is smaller than a 35mm full size sensor.
The date/time (back-up) battery maintains the camera' s date and time. The battery' s service life is about 5 years. If the date/time is reset when the main battery is replaced, replace the back-up battery with a new CR2016 lithium battery as described below.
By adjusting the diopter to suit your eyesight (with or without eyeglasses), the viewfinder image will look clearer. The camera s adjustable dioptric range is -3 to +1 dpt.
Attaching the Strap Pass the end of the strap through the camera s strap mount from the bottom. Then pass it through the strap s buckle as shown in the illustration. Pull the strap to make sure it does not slip out of the buckle.