I'm shooting with a Digital Rebel. I have the 28-135 USM lens. I was trying to explore the possibilities of using a wide angle close to the subject to highlight depth and give a sense of elongation. Here's the anomaly: When I set the zoom on the lens to 135 mm, the EXIF data on the computer shows " focal length: 135 mm." However, when I set the lens to 28 mm, the EXIF shows 47mm. Why does this happen? Is is because the camera is APS-C? If so, wouldn't it affect the 135mm side as well? Or is it just a problem with outdated firmware? Whenever I shoot with my 50 mm, the EXIF displays 50mm.