Yes, just 100mm only. No TC nor extension tube. Just my camera, lens and radio triggered flash with home made diffuser.
The photos are 1:1 ratio. Basically I set the lens manually to 1:1 (so manual focus) and then move the camera backward and forward to focus. It works better on a monopod. But since I do not have a monopod, I use a tripod and make it worked like a monopod. Now I really need to buy a monopod since my tripod is kind of heavy for this.
I think the first frame is way better than the second one. I love that little bit of pollen on the fly's eyeball area. (How does one refer to a singular, multi-eyeball area when a fly has two separate eyeball areas, each composed of dozens on individual, tiny eyeballs??)
Thanks for the comments. I am still learning and trying to improve the technique.
Nates: Yes, they were cropped in.
So far, I learned that light is very important to get good macro shot. I am still trying to make my DYI lighting setup for macro shots. At this point, I think I need to use a PC cable instead of the cheap radio trigger because I can take the shot at 1/250 with flash on the shoe while I can only use 1/200 with radio trigger. (Maybe because of a slight delay)