Two Photographers (B&W Crop)

Shot with a Nikon D2Xs and a Nikkor 50mm f/1.8 lens on a TC-16A teleconverter (field of view like 120mm on a full-frame camera).
ISO 640; aperture priority set at f/11. The small aperture resulted in a shutter speed of 1/30th; this has given a blur caused by the movement of the girls as they passed. Although a tight composition in the first place, I have cropped it further for effect and presented it in black-and-white because the colours were fighting with one another.
The whole picture is entirely accidental. I should have used a lens with a wider angle. the shutter speed ought to have been at least 1/125th, possibly 1/250th. But then it wouldn't have resulted in this picture. Life is full of chance.