I've been eying a DA 17-70 to complement my F 70-210. The Sigma is intriguing, but it still says "Sigma" on it and nothing says Significant Malfunctions like SigMa. (Yea, I know Sigma has improved a lot in the past decade, but I'm old and have a long memory).

I did a little research on 18-135mm lenses a while ago for a friend, and the only one that seemed to be worth owning by all accounts was the Nikon. Remember the 18-135 is the same class, on APS-C digital, as the 28-200, on 35mm film, with pretty much the same image quality. The Pentax/Tamron 28-200 wasn't great on film but was pretty good on APS-C digital, (the center portion of the frame was pretty sharp at all apertures), at least my copy was, until I beat the hell out of it enough to case what looks like a decentering problem.

Personally I'd go for the Pentax 17-70.

On 7/23/2013 7:40 AM, David J Brooks wrote:
Hey all.

This last week at the plow demo got me thinking again about my short
zoom, the 16-45. Normally i take two cameras, the D2H with re 70-200
VR f2.8 and the D200 with the 18-70. I use the 18-70 for the closer
shots when the teams come at me. This year i took the K-5 and used the
16-45. It performed fine, but at 45 at the long end just does not get
what i want before i switch back to the longer zoom.

So


Im thinking something along the lines of the Pentax or Sigma 17-70 ish
lenses, and i think i saw on  Henrys site an 18-135???

I know these have come up before just looking for opinions.

Also the 55-30 is still on my list, although the sales person at
Henreys showed me the Sigma version, a bit cheaper and now i'm humming
on that one.

Comments about the short zooms or the Sigma 55-300 appreciated,

Dave



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