I use my 1D4 for air shows and I'm pleased with the results.
But I found these Nikon D810 images on flickr. I'm very impressed with the IQ and detail.
The clarity is amazing. I may rent this camera some day.
Of course the photographer's skill plays an important role in capturing these images.
But my post concerns the D810's IQ. I wonder if he new 1DXII or 7DII can match the Nikon.
Check these out...be sure to view in large size...press keyboard 'L' for best view.