Quite right Lew... and even more so if you have to have the lens wide open you are not going to get the sharpest images in any case.. So yes Tom your f4 will certainly do the job for you, and the only time it is worth considering the extra expense of the 2.8 etc is if you are going to earn a living, or it is important to be able to get a shot in the widest possible conditions..

Danny O'Byrne  http://www.digitalartzone.co.uk/

"All the technique in the world doesn't compensate for the inability to notice" Eliott Erwitt