I am relatively new to DSLR cameras, so I apologize for any potential ignorance. Since I have been using this cameramy Canon T3i, every time I attempt to take a close-up photo, the camera does not auto adjust and take the shot. I get red square dots that show in live mode or a blinking green dot in the viewfinder.
I have searched around trying to find answers, but I haven't found one yet. Does anyone have any idea what I am doing wrong?