Look for the micro lenses from Nikon. They come in 60mm, 105mm and (i think) 180mm. They cost between 700sgd and 2000sgd with the longer focals becoming more expensive. The longer focals let you take the shots from longer distances without spooking the insects. Personally I would suggest that you try using the 18-55mm kit lens first. It is an amazing lens for its price with ~20cm closest focal distance.
get a general purpose lens to feel what focal length you work with most, slowly progress to prime then
Playing with M43.
A Tokina 12-24mm
Ultra wide to cover wide view landscapes, 'normal' enough on APS-C to do streets (typically subject in context to environment type shots).
Shorter focal length zooms like a 10-20mm will usually still be a bit short for general walk around use.
Last edited by pinholecam; 9th January 2011 at 02:34 PM.