Another image from my back garden set up
Olympus E-M1X
Lens focal length : 210 mm
Focal length in 35 mm film : 421.0mm
Exposure mode : Manual exposure
ISO Sensitivity : 800
Exposure compensation : 0.0 EV
Shutter : 1/3200 sec
Aperture : F5
Jon this is looking dramatic.....Because of the head being sharp, the viewers eye goes directly towards it....Would f/6.3 have made a difference... I was doing the same as you, a couple of days ago at my set up......and managed 1/4000 on a few shots at f/6.3 with an ISO of 2500....It did make a difference with the high SS, and the noise was minimal. Not an easy shot to capture....You done well here.