I have added specifications and MTF charts (have you seen these yet? impressive) to the following review placeholder pages:
Canon EF 300mm f/2.8L IS II USM Lens Review
Canon EF 400mm f/2.8L IS II USM Lens Review
Canon EF 500mm f/4.0 L IS II USM Lens Review
Canon EF 600mm f/4.0 L IS II USM Lens Review