click for bigger image click for bigger image Having said all that, I can personally tell all of you Canon EOS camera users that I do not use this telephoto zoom lens as often as my other EF lenses for most of my photo assignments. This is because most of my photos were shot using wide to medium telephoto angles and rarely do I need to shoot with focal lengths exceeding 135mm in most cases. As mentioned earlier, the beauty of all telephoto lenses is they are used mainly to isolate the main subject from the other elements in the picture by throwing the background out of focus and maximized the lenses' effects of compressed perspectives with the subject matter. Compared these photos of the man at the telephone booth shot at 70mm and at 200mm. << Back to Main . 1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 .