Originally posted by GUB If the question was " if you are allowed three lenses" then I would go for 3 primes and no zooms so I think we need another poll!!
But since you already indicated you'd go for 100% primes, we don't need to know how many.
The one reason I can think of for primes is the user engages in a lot of wider than ƒ2.8 photography. There are quite a few 1.8 and 1.4 lenses, not so many zooms in the same range.
The issue with that is, ƒ1.4 t ƒ2 lenses tend to have not very good IQ wide open. Unless you are going for the super-narrow DoF thing, so much so as to be pretty much useless.
All the primes I use on a regular basis are either sub 2.8 or macro.2.8.
It's hard to tell from posts like this what the author is comparing to. Does he actually own any quality zooms?
When I go out, with the K-3, I take the 18-135 and either the DA*200 or DA*60-250. So I actually have a choice. Most of the time I take the 60-250 but evening or early morning when there's less light I might take the DA*200, or if it's going to a really long hike I might take the 200 to take an extra half pound out of my pack. But 90% of the time it's the 60-250.
But that's a real choice based on experience of two fine lenses, both of which are in reach in my camera cupboard right now.
When I read posts like this I always wonder, is this an intellectual preference based on the personal opinions of possibly biased photographer, or is this an actual description based on working knowledge of both primes and zoom lenses.
I ask because a person who's never had a top quality zoom to work with might possibly not know what he/she is missing. If you never get comfortable using a quality zoom, you'll never know exactly what you might like.
P.S.
See here's where you lose me. My DA*60-250 is as good as my DA*200 IQ wise. So I have the DA*60-250 set to 200mm. A stop slower but essentially having the same IQ. Why would having other focal lengths available at turn of a ring be a disadvantage?
The difference as I see it, with primes, if you need a longer or shorter focal length, you have to take the time for a lens change, and that's not even always possible. I've been in rain and dust storms where a lens change would be ill advised. With a zoom, you turn a zoom ring. It works in all weather and dust conditions.