Windows For the Soul - Photography

Panning a Cormorant: how hard can it be?

I've been trying to get a decent panning shot of a cormorant taking off, but this has proved rather difficult to achieve. I hardly ever manage to get them taking off in the right direction and there is just too much vertical movement, as they jump on the water, for me to be able to get anything sharp enough before the cormorant is actually flying. So far, this is probably the closest I could get to what I want. However, I can see a few details that I am not happy with. First of all...the bird is already flying because I could not get a sharp enough photo when it was jumping along the take off. The background is a bit too dull when it comes to colours but that's not my fault. The eye could be a bit more frozen which I would dare say means that I wasn't following it as steadily as I should have. Worst of all, though, my shutter speed is a tiny bit higher than I wanted for a proper panning shot usually I would go for 1/20-1/40 but to try to compensate for the vertical movements of the bird's on take off I set a 1/60 speed. I surely am not giving up, though...
On the other hand, I always hesitate between using the Nikon D3S for its machine-gun shutter speed or the D800 which I feel it has a better focusing system in difficult situations and in a panning situation is obviously not limited by high ISO constraints. I went for the D3S, losing resolution, focusing accuracy and detail, even though the latter is not determinant in this context, I suppose.
Do email me if you have further suggestions or comments to make.

Nikon D3S, Nikon AF-S 300mm f/4 ED-IF