Originally posted by Lowell Goudge I was going to ask how wide was wide, but you answered this by saying that 16 was not much wider than your present 18mm kit lens.
you really want to go with either the pentax 12-24 or the sigma 10-20. not cheap but really good lenses.
I would suggest that for wide landscapes stitching 2 or 3 shots in a panoramic format gives much better results than using a very wide angle lens. To support my statement I submit 2 shots taken on my istD in France last year from the same viewpoint, one is a 4 shot stitch with my DA 16-45 set at around 30mm and the other from the Sigma 10-20 (which I subsequently returned).
Even on screen at reduced resolution, you can see the very marked differences. I have had the panoramic shot printed to A0 size and it is stunning!
I subsequently tested the DA 12-24 and found it to be considerably superior to the Sigma 10-20 EX, I had a replacement of the first Sigma I returned and the second was virtually the same, so I decided not to keep it. If you want a single wide lens to take street shots I would recommend the DA 12-24 as being the better lens, even though it is more expensive I believe it's really worth saving up for.
Sigma shot (only the top and bottom cropped to match the view of the panao):
Stitched shot:
Regards