I was reading a review of Leica lens by a photographer by the name of Putz on Leica's website. He made a statement that for hand held picture taking, it is best to have a speed faster then 1/60 of a second and let the aparture opening fall where it may. You think you can hold a camera steady at 1/30, maybe you can, but what you are not taking into account is your heartbeat, which can cause the image to blur. Even with a lens wide open at a shutter speed of 1/100 or more, you will have a sharper image. I always thought it was best to have the shutter speed down around 1/60 with as high of an 'f' opening as possible for the sharpest images, -that apparently is a mistake. (Another helpful hint)