Sony A1 with 100-400mm lens and a TC (equipment borrowed from my friend). The focusing ability of this combo was astounding. I saw the harrier chasing the peregrine falcon and quickly grabbed a shot. I can almost see the worried expression on the falcon. 1/1600, f/7/1, ISO 3200. Noise reduction was done in DxO. Local exposure and contrast adjustments were done in ACR. Photoshop was used for global cropping, contrast/exposure, and sharpening.