Well, I've gone and done it again. I left a fast lens open enough so that several people in a group shot are blurry. While I realize this was just a foolish oversight on my part, can anyone offer advice on how to reliably adjust the aperture so that all the people in the varying focal planes will be in focus at the widest aperture? DOF preview? I've never really figured out how to use this function. I've spoken to a professional photographer friend of mine who shoots all groups at f11 or higher! While this may be practical with studio lighting, how do you reliably handle this when shooting in available light? This was taken at dusk with the 85mm, f1.4 at f2.5. I realize now that I should have increased the iso, but I generally hesitate to go above iso 400. Wife in focus, children quite soft.