I'd like to recommend that some people open up their minds a little as to what people will and will not add to their kits. I added the EF 24-70 f/4L IS to my kit to replace my EF 24-105mm f/4L. What? How can this be? Why would anyone...? A few reasons. The 24-70 is smaller and lighter. I shoot almost exclusively landscape, so I'm stopped down. As soon as I hit f/8 on my 24-70, it's sharper than the 24-105 at every focal length. I carry a 70-200mm f/4L IS in my kit, so I have 70-105 covered by a lens that is also sharper than the 24-105 at every corresponding focal length. The 24-70mm gives me the ability to take macro shots while I'm carrying a two lens kit on backcountry trips. And yes, they are macro shots. Don't knock the feature until you take a look at some of the images. Is it as good as my EF 100mm f/2.8L IS? Heck no. Is it taking macro shots that are good enough to print/publish/sell? Heck yes. Unlike, the reviewer, I haven't noticed any focus shift with mine. Bottom line, if ounces count, which they typically do for landscape photographers, this lens is much more attractive that the 24-105mm. I chose the Canon system in 2005 almost exclusively because of the f/4L zoom line. This lens is a great addition to that line and an excellent alternative to the 24-105mm (which I've hung onto for single-lens trips).
Sorry if this has been addressed later in the thread as I haven't finished reading, but can you post some pics taken with the 24-70? I'm very interested to see a few and would greatly appreciate this.