Dag, > I think I'd prefer the 77, but on the other hand: An *ist D with 21mm, 40mm > and 70mm would make a very compact travelling set.
*istD with Sigma 18/3.5 (definitely bigger than 31 mm), 43 mm and 77 mm all fit into very small bag that I took with me to London... The only advantage I can think of is that 21 mm is way wider than 31 mm... -- Boris
