Photos at 896mm using 1.4x TC
I shot this hand held in the rain from my patio, using RAW capture....
I used a Canon 7D Mark-2 camera (1.6x), 100-400mm f/4.5-5.6L IS II lens at 400mm with a Canon EF 1.4x TC (Mark I) which comes out as 896mm
I focused on the center bird using burst mode, center point single-shot, auto-focus
Manual exposure 1/2,000 second wide open using auto ISO at 3,200
Opened this into Photoshop CC using Adobe Bridge/Camera RAW
I used NIK Dfine for noise reduction and NIK Raw Presharpener and then I selected the birds in NIK Viveza and increased the structure 25%
Saved as a JPEG and uploaded full size to Smugmug.
I then linked it to CiC in X3 Large 800 x 1200 pixels
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