I have noticed, mostly with my Sigma 70-300 telephoto/macro lens, that when the camera beeps after autofocusing there is a 1-2 second delay before it actually takes the photo. I dont remember seeing this before. I notice it more inside and when I am shooting something from across the room. Anybody know what might be going on? BTW, I have the Nikon D50. I am currently using the 'P' setting.