This fly was driving me crazy because it kept landing on my monitor while I was trying to watch a movie. So I trapped it under a glass with a napkin, transferred it to my kitchen table, put some honey on the napkin, and lifted the glass when it started feeding. I set the aperture to F16 just to show you how much detail is possible when your light is well diffused and the duration of the flash is short enough to freeze the motion in the scene.
Tech Specs: Canon 70D (F16, 1/250, ISO 100) + a Canon MP-E 65mm macro lens (4x) + a diffused MT-24EX. This is a single, uncropped, frame taken hand held.