Lens considerations - making more with less
Camera lens technology has come a long way.  Today there are zoom lenses that feature a large span of focal lengths in a single lens.  Too good to be true, well maybe not.  As focal length coverage increases, so does the price and weight of these lenses.  Quality may not be quite as good as lenses that cover a smaller range, but quality may be perfectly adequate for the intended usage size, especially for the amateur photographer.  Carrying one lens instead of two or three may be an important benefit to those with limited space.

Another important lens feature for the traveling photographer is built in stabilizing technology.  For example, Canon's IS (Image Stabilization) lenses, or Nikon's VR (Vibration Reduction) lenses.  While not a panacea, this technology can help photographers photograph at up to 3-4 stops (realistically more like 1-2 stops) slower shutter speeds with good results.

Some lenses that would fit this category would be: