Originally posted by urundai @Clicker : So, I am thinking of the tamron 28-75, which gives nice range covering street photography to portrait in f2.8. I can use it indoors at least and it isn't very expensive.
I've had my K-r for a couple of years now. It has been a learning curve, including figuring out the lenses you need. I started with kit 18-55 then got the DA 55-300 to give me a nice set. Then got into a couple of primes. However, I still felt like I didn't have a good walkabout lens and found myself swapping around a lot and having to carry more than I want when on days out. When out and about I mainly just take pics of family and of wherever we are.
I found the 18-55 wasn't quite long enough, but using the 55-300 I often wanted something just shorter so would swap a lot. For a prime though the DA 35 2.4 is very good but I still wanted some zoom range.
I then started looking at the 18-135 but this is quite pricey and not a fast lens, which I want for nice shallow DOF pics of family etc and to use more indoors as well. Anyway, after lots of research I purchased a 2nd hand Tamron 28-75 and so far am finding it perfect range. I don't need any wider for my walkabout and the range to 85 is perfect. I find anything beyond that and I struggle to keep the camera steady enough for handheld anyway.
Therefore I think I am now going to be pretty happy with the 28-75 and because the DA 35 2.4 is so small and light I will probably chuck that in as well. I then have my other lenses for when I am doing something photography specific versus just out and about.
To cut a long story short, I recommend the 28-75 for a walkabout, unless maybe you want to do a lot of landscape stuff. In my case I don't so 28-75 is great and any longer I figure I'd need a tripod.