Exciting! If you use the TC, don't be afraid to bump up the ISO -- the noise is the same or lower than cropping in post. For example:
  • 1/320, 500mm f/4, ISO 800, cropped to 9.2 MP
  • 1/320, 700mm f/5.6, ISO 1600, uncropped



Both of those shots will have the same angle of view after cropping, but the ISO 1600 will have slightly less noise. (One of the few advantages of using a TC).


Have fun!