So I've had my trusty little Canon PowerShot, model A540 for quite some time, and a while ago, I bought myself one of those high-quality wide-angle lenses that are made by Canon. Now this is the thing: I'd like to see about getting filters for the camera, as well as a filter holder, but is it at all possible to have both my wide-angle lens, as well as a certain filter on my camera at the same time, or no?