What "walkabout" lens do you 10D owners use. I've had my 10D for almost a year now, and used it mainly with my ancient-but-good EF 28-70 f/3.5-4.5. I've done an analysis of all the shots I've bothered to print (i.e. the good ones!) over the last year, and for the 28-70 lens it breaks down at about: 40% at the 28mm setting 60% at focal length li> 20% at 70mm ..and therefore 20% at between 35mm and 69mm I'm feeling the need for something a bit wider than the 28-70, to use as a general walkabout lens, as so many of my shots are right up against the bottom end of my current zoom. My constraints are: Spend max UKP 500 Optical quality >= my 28-70 Possible to use a polariser with...my 28-70 makes this almost impossible! I also have a 35-135 f/4-5.6 USM for when I need something a bit longer and a 50mm f/1.8 for low-light. What would you get, and why? 17-40? Blows all the budget and may be a bit short for a walkabout... Tamrom 17-35? Cheaper than the "L", but even shorter at the long end... Get a 17-85 IS and hack it to EF mount? Well...if I was less clumsy maybe..... 24-85 USM? Not a whole lot wider...would I notice the difference? Thanks!