Lets say I have the canon 10-22mm super wide angle lens. I set that to 18 mm with my 1.6x crop body. Now I take similar shot with my 18-55mm lens kit and set it to 18mm. Will I get the same perspective? Is "wide angle" lens pretty much a low zoom lens? I understand that at 18mm you probably dont see the full wide angle look due to the cropping. Thanks!