I've been shooting with a Panasonic FZ150 for the last few months (since it came out) and while I think it's an excellent camera for what it's meant to do, it's not a DSLR. I've been shopping for a good package to compliment that one and I think I've settled on a Canon T2i and a Canon 15-85 lens. I think I will bypass the kit lens and order it body only. I'll save a few bucks that way and redistribute the kit lens money into the nifty fifty. If I need more reach, it's likely not a shot I'll be making a 20x30 print out of, so the long zoom of the panny will do just fine. The things I like to shoot are mostly landscapes, so the 15mm is attractive to me in that regard. I have a panoramic head for my tripod and a very good stitching software program. I'm starting to really get into HDR and Photomatix as well. I've not been able to do a lot of night shooting, like milky way shots, as the low light performace and limited shutter speed of the FZ150 have prevented me from doing so. I'm hoping the T2i will be better and I'm looking forward to trying my hand at some really long exposures. The bulb setting is a big plus. Is this a good lens that will perform better than the kit lens for these types of shots? I'm not familiar at all with comparable offerings from Tamron or Sigma. The downside is my local brick and mortar store does not have the 15-85 to have a look at firsthand. I like to have a product in my hands before I fork over nearly $700 for a lens I've never seen in person. They have the 28-135, but I don't think that is as good optically. The reviews are strong enough for this lens that I'm not too worried, but a lot of the stuff I'm reading is the wide open aperature performance. Do I just assume that this lens will perform well at f/22 or f/36 for tack sharp landscape shots? Without being able to try it out, I'm wondering if there is any barrel distortion that would make stitching a nightmare, or softness that would become much more pronounced in panoramic prints? Anyone own this lens able to give me any good insight? Thanks!!