Hello. I'm brand new here and just getting into photography as something I've always wanted to learn but never did. I've picked up 'Understanding Exposure' and I've been snapping photos like crazy every day, trying to learn more and more. My camera is a very basic digital - Canon Powershot A40. I've been using it strictly in manual mode, trying to learn as much as possible, and I've definetely noticed some drawbacks to my options. I'm only given two aperture size options based on my current zoom. I can manually enter the shutter speed as I wish, but there's nothing telling me that I'm at the correct exposure. Everything I've read makes it sound like my display should tell me, based on my aperture, what my shutter speed should be for correct exposure, but that doesn't seem to be the case with my camera. Is this just a case of having an entry level camera or am I possibly missing something? I spent quite a bit of time last night with the manual and the camera, but couldn't find anything that addressed this. Any ideas? Thanks very much.