On our photo trip to Blackwater NWR we were hoping to see a lot of Eagles. Winter is when they have the largest concentrations of Bald Eagles, so we were hoping for the best. We saw quite a few in the distance but not many close by. I saw one on the ground across from pool 3a, looking around with some feathers around so I assume it had a meal. This Eagle then flew into a nearby tree. Then, I believe the mate, joined him. This Eagle was on a snag in the water, on the other side of the Wildlife Drive. They were now a little closer, but I still needed to change my 1.4x teleconverter to a 2x to get even closer. Then I got my tripod and stacked the 1.4x teleconverter with the 2x teleconverter to try to get even closer. I was using a Canon 1D MkIV with a 1.3x crop factor (from full frame DSLRs) so with this combination I had a field of view equivalent to 1120mm @ f/11 wide open, so I stopped down to f/16 & f /22 for a series of shots to see what I could get sharpness wise. Luckily my subjects cooperated and were fairly static movement wise. It was a somewhat dull day so I had to up my ISO more than I like to use. They cooperated for quite a while and they attracted quite a few other photographers, so we moved on.