I've recently become interested in local insects more than in the past because of a couple of gigs doing bird surveys on private property in the county where, in both cases, the people asking me to catalog the birds present are interested in everything—birds, wildflowers, insects.
Photographing insects with the same long telephoto lens I use to photograph birds actually works quite well, but I thought it time to get a dedicated macro lens. Olympus makes a very highly rated macro lens (60mm, f2.8) that I was able to find fairly inexpensively used. I've only been able to go on a few outings with this new lens, but, so far, it's proved hit or miss. The extremely shallow depth of field makes it a challenge to get anything in focus—particularly critters that don't hold still.
So far, I've had the best luck (and a great deal of luck seems to be required) with the most common of insects—honeybees and house flies. I'm hoping to capture something a little more exotic before too long. (Click on the image for a larger view.)