i have a Professional camera and the right Lens for a shot with a tiny subject. but when i get Focus on it and the picture in place i click the button but it refuses to take the picture no matter what i do to the settings. it will just beep. as a guess im thinking it cant capture such a small image but i have focused it all right so i don't understand why it doesn't let me take the picture? can anyone help resolve the issue or evan help me understand why?