The pentax 18 135mm f35 56 ed al if dc wr lens has been designed to be compact and lightweight despite its high zoom ratio making it a versatile maneuverable everyday use lens a simplified weather resistant construction and an extra smooth autofocus operation using a built in motor in addition to its high 75 times zoom ratio allow the da 18 135mm wr to accommodate a wide range of subjects and scenes that photographers come across in their shooting sessions from scenic images and snaps