This frame is from late 2012 during my trip to Haines, AK with Jim Neiger. This photo was made in the Chilkat river eagle preserve. Back then I was shooting with the 1D MK IV (wish the 1DX was out before my trip) so the images weren't as clean as my 1DX in low light. I went back and reprocessed this one with the new software (DPP4 and latest Neat Image plug-in in PS CC) to see what I can get and was pleasantly surprised. I think I can now print this one too
1D MK IV 600 f/4 II. ISO 1600, f/4 at 1/1250sec. Hand held. Processed with DPP 4.4
BTW, if I had a 1DX at the time I would have put on my 1.4X TC (the 1D4 did struggle with TC in low light) and shot this at ISO 3200 or even 4000. Eagles would have been larger in the frame and the image would have also been cleaner... This to debunk the crop-factor myth :)