Day 36 - Anyone for Tennis?

A group of us went out for a hit of tennis and I decided to try out my new toy which converts a Canon camera mount to a Nikon lens mount.  This enabled me to mount a Soligor 500mm F/8 lens onto my EOS 7D, which once you take into account the crop factor becomes a 800mm lens.  Of course all auto control is lost so its a handful getting critical focus.  It's not the most exciting image but it reminds me of the fun had on day 36.

Technical:
ISO 3200
Soligor lens at 500mm
f/8
1/800s