The Prime lens bug.

I'm with gasrocks - pick the lens to do the job. If I am am walking around a zoom is my preferred lens because it allows me to frame the shot I need.

But really - it all boils down to personal preference. If you don't mind changing lenses - go for it. I personally think it's a pain in the butt. Searching for the lens in hte bag, juggling the two lenses before putting one back on hte body, doing it quickly to avoid dust, worrying about dropping my babies. If I can avoid it, I will. I'm not afraid of it, but it's an oppportunity for problems.

If money is not tight and you do not need to sell lenses in order to get others then I would advise against becoming a 'primes only' or 'zooms only' person. Such positions always strike me as more of an ideology than a practical position.

My 24-105L is my most used lens on the 5D, but it only goes to f/4. To me owning both the 24-105 for when I do not need a fast lens and then also having some primes for when I do need a fast lens is best. For sure when I just want to grab a small bag and take some pictures I prefer the 24-105L to lugging along three primes.

I think if money was tight I would probably go for a compromise of a faster f/2.8 zoom. The 24-70 alone is a lot cheaper for instance than trying to own a set of 24/50/85 primes.

I really do prefer primes to zooms but I could not see me ever parting with my brick.

gasrocks wrote in post #7225371
There are people on this forum who do not want to change lenses on their camera. And certainly not every few minutes. I think that is kinda silly myself but zooms have their place. If I was going to travel light I would grab 2 zooms and not a bunch of primes. If you came over for a portrait I wouldn't even consider using a zoom. But, it probably took me 20 years to learn where to stand to get the proper perspective for a picture. Now, I can use a prime easily. For others, having a zoom helps them get the job done.

I absolutely agree. There's room for both, and gasrocks comment sums it up nicely.