Great new toy you got there! I've gotta Nikon D90 and a Micro Nikkor f/2.8-ed 60mm lens, but I just can't seem to get my colors to pop like this!
You're dialing up your ISO (which is a new thing I'll try), what about shutter speed when your at say f/3.8? I'm getting okay results at 1/500 and f/4.0 and auto ISO, but.. that's about it, somethings just don't shoot that well.
Fantastic specimens sir!