Hi Gilles, what kind of artificial light did you use for these images? Good focus on both of these flowers. It does seem as if the red and perhaps blue channel is blown on both images, perhaps that was your intent. I like the nice detail on the center of each flower.
For the pictures i used a 3400K flood in a large reflector held very close and high on the left of the camera. The flower are held with a clamp and the back and left side of the flower there's some styrofoam pannels. The lens is the 200 micro-nikkor and mirror locked and trip with a mc-20.