A few nice photo studio images I found:
esther_mari_03 © studio.es
Image by Vincent Boiteau
I don't have a ringflash but with Esther, i wanted to get that strong hard light parallel to the optical plane so that no shadows exist, diference in luminosity are only due to the shape of ther body.
I placed the 70cm beauty dish touching the camera on a tripod, exactly co-axial and then trigger, of course i couldn't look at the picture through the lense as the flash was right behind.
