Summary: Good for the price. At either extreme of zoom there is definite ghosting/shadowing and loss of focus, but this isn't the lens' fault, this type of artifacting is common among large zoom ranges. I can easily see this lens being used for amateur family trips. And if possiblly used with extension tubes or a homemade magnifying setup to allow for some interesting macro shots. But this would be used only in a recreational context and not as pro solution or even a pro am.
Summary: I bought this lens instead of the normal 55mm lens. I am glad that I did this because I could do wide angle as well as far distance. Its mated to a Canon 30D and for all these years, the camera and lens worked perfectly for me.
If you can get a nice one for less than 150.00, do it.
17 November 2012
Summary: Great starter lens for amatuer film photography. I'm using this on a Canon EOS 5/A2 35mm slr. Auto focus is quick, albeit noisy relative to today's latest dslr lenses. Manual focus ring isn't very smooth, but it's more than manageable. From the many reviews I've read, experts and professionals say this lens is crap - but they're comparing it to professional-level equipment that probably costs much, much more.