I'm looking to get the Canon 7d by the end of the year. I'm waiting while I gather some more info about it and the lens choices. I guess there are 2 options in lenses that come as a part of a kit with the camera: Canon EF-S 18-135 IS Canon EF 28-135 IS USM I know the 28-135 is older. The 18-135 has newer technology. The owner of a camera shop told me that the 18-135 focuses as fast (or at least almost as fast) as the 28-135 IS USM. Is this accurate? How is the picture quality different between the two? I'm leaning towards the 28-135 because it is EF and could potentially be used on a future full frame, but that's several years down the line and there may be new lenses to consider by then. If you have tested either (or even better, both) of these lenses, I'd love to know what you thought about them.