OMB I use a Canon 5D MkII which has a 22MP sensor, but most of theses type images have been cropped. I shot these with a 180mm Macro lens. I'm not entirely happy with my photographs so far because I can't get things to be completely still. This is important, because at such magnification you have to stop your aperture way down to get everything in focus. That means a long shutter speed, and the main air exchange fan creates just enough movement to make problems. I could shut it off but things heat up real fast when I do. I'll keep playing with it. Maybe I'll get some good ones tonight.