This guy is using a Canon 7D with the Canon 100-400L zoom lens.
He’s fully zoomed but he still could not get the ‘right’ look. So he started to bend his knees and up/down a few times until he seems to have found the ‘correct’ height.
My problem with this dance is that sometimes I get ‘stuck’ and then it’s very difficult to stand up. My preference is much lower to the ground, so I have some carpenter knee-pad for my right knee.
A photographer doing the ‘photographic dance’
Camera: Canon 7D ISO 400 and 1/500
Lens: Sigma 120-400 f/4-5.6 @273mm and f/7.1
Processed with Darktable 2.0.5: http://www.darktable.org/