A friend of mine asked me to shoot all his wedding with his D300s. I shot about 800 frames (being a guest too) and what I noticed: under the following condition (ISO auto, about 800-1600, A, f2, single focus point, no flash attached) quite light situation, the camera focuses when I half-press the button and when I press it, the shutter does not click, the scene changes I get unshot, or lost image - when I was keeping on pressing the button the shutter clicked after 1 or 2 seconds... and kept on clicking... No hunting. Visible at least. The lens: 50/1.4 G AF-S. With my Olympus I do not have this problems. Its static AF is very "catchy"... While in comlete darkness the bulb on the body helps and no problems exists. Why was that lag?