You may now find a reference for the Canon EOS 400D / Digital Rebel XTi / Kiss X as well as for its companion the BG-E3 battery grip as they are depicted and referred to, in many of the illustrations of my articles about Panoramic heads, Nodal Rails and Macro Rails.
I hope you find the references useful, thank you for viewing.
All Photos © 2010-2012 S.C.Vlachos
Canon EOS 400D /Digital Rebel XTi Reference
Canon BG-E3 Battery Grip Reference