You can look on Tamron 24-135 or Tokina 24-200 (!!)
Up to now I've been using Tamron 20-40 and Canon 28-135. One week I was shooting under quite severe for digital camera conditions (ocean, beach and so on) and had to change lens quite offen (I needed wide angle to get a beauty views). What was my surprise, when I discovered the blemishes, spots and such crap on my pictures. Looking carefully at the sensor, I found dust, diiferent microscopic spots which I got while changing the lenses. Unfortunately I couldn't mange to clean the coverglass for the sennsor myself and had to send the camera to service. Now I am trying Tamron and Tokina, I've mentioned, to replace Canon 28-135.
My opinion now is: this Canon lens is not so good (apologets of Canon - kill me
) ). I found the pictures, made with this lens, more flat, more cold, more lifeless than ones made with Tamron (on my test only !!)
28 - IS NOT ENOUGH to shoot indoor. Due to 1.6 factor it is only 45 (44.8). And this is not wide at all.
Choosing the first lens in case of reduced budget, buy a lens, buy functionality, rather than NAME.
I tried both Tamron and Tokina (I verified only electro-mechanical-optical parts, not pictures).
They are both built extremly well and reliable (what I can't say about Canon 28-135. For me it looks a bit flimsy), AF is fast and silent (especially Tokina). I would say, they are both operates like USM (some people found its operation even better).
According to www.photographyreview.com
, both have extremely high optical quality, sharpness is equal on both ends of the range.
I made decision to replace my Canon with one these lens. But I have not decide what to choose: either 200 mm of Tokina or better macro features of Tamron.
PS: I have updated my album, added Cape Cod pictures. Welcome to my album:
http://www.fototime.com/inv/1ED73EE3A506E52