Originally posted by Bart I find some tele very useful for architectural details that can be some distance away like higher up in churches, on fronts etc.
I'm with kerrodown by the way. When on my holiday trip, I bring everything I have.
When I go out, naturally I make a selection.
I do this to some extent, I can't take everything though as I have (Due to LBA) 45 lenses and 3 dslr bodies, but I do take 2 camera bags.
one to carry eveything to where I am going, and a smaller shoulder bag that can hold a couple of lenses and / or a second body with a lens attached.
THat way, I take what I think I would realistically need for the purpose, although lately, I really have found that I can get by on vacations while city bound with just the 10-20 and 24-75 if I have to. In that case I put one on my K7 the other on my K10 and just switch bodies/lenses in and out of the shoulder bag.
I agree a tele can help on archetectural details, and this is where I flip back and forth between my 85/1.4 plus 1.7x AF TC and my K135/2.5