I was around downtown Atlanta fuckin with my camera yesterday and figured out some basic settings. Normally, I'd shoot in automatic mode on "P." But I put it on manual and played with the aperture and shutter speed settings. I noticed that high aperture and fast shutter speeds get darker images. And that low aperture and slower shutter speeds get brighter images. After reading up on it, I understood why. When theyre both higher and faster, the light doesnt have a chance to get in the camera. With them lower and slower, light has a chance to get in the camera.
Just an interesting observation for anyone that it could help.