You'd think an entomologist would have loads of insect pictures, but I have only a handful. I found these four last week while looking for illustrations of macro and close-up photography and decided I liked them well enough to share.
Only the first image was taken with a true macro lens, the Sigma 150. On a crop sensor camera like the D90 it makes a great "bug stalker." Unfortunately, when I upgraded to a D7100 I found it was incompatible with the Live View autofocus system of the new camera (important for shooting on a tripod), so I sold it.
The remaining three images were "opportunity shots" taken with a variety of all-purpose zoom lenses. In each case, I got as as much as I could at the longest focal length and then I cropped afterward for the best composition. I'm surprised at how well this approach worked even with the 12-megapixel D90; with modern higher resolution digital sensors you can really throw away a lot of pixels and still come away with something.
These images make me want to shoot more insect pictures. The first image, in particular also makes me want to get a new "bug stalker" macro lens.