Hello, SLR n00b here - I've just acquired an Olympus OM10 which has a telephoto, macro wide angle and x2 converter lens. I know what the telephoto and the macro wide angle do, but I'm not entirely sure about the other one. I was wondering if somebody could explain to me when I'd need to use that particular lens? All I know is that it doubles the focal length - I'm assuming that means I can take clear pictures from a further distance away. Would I need to do anything special while using it e.g. change the aperture?
Thanks in advance!