Originally posted by twitch The 12-24 is not that heavy at all but it has a large hood.
As for the DA21, as you can see from my sig line I voted it out, but I still have the 12-24.
It's also a lot more compact than carrying a 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, and 24mm prime all in one bag!
I am a prime person, but in the wide end every small change in field of view can make a difference. Having one lens to do it all is not a bad "compromise". Actually, I traded away a Limited to get this zoom. The build is only average, but the IQ is spot on.