Nice shot Mike, that big lens makes it nice to get the full effect of what you were seeing. I was trying to capture the moon and it's relection off of the clouds that were around it and that was incredibly hard to do. I could either get the clouds and a big bright spot, or the just the moon with more definition. So far noone has told me how to get both in the shame shot!!

Lots of difference in that 70-400G and the 70-300 Sony. Teleconverter would be awesome....
Have you done any shots with a reflex lens?