My first action shots with the new K-5. I went to Seaworld, Gold Coast. I only took a Sigma 17-70/F2.8-4.5 7 and a Pentax DA-55-300/F4-F5.8, instead of the DA* 60-250/F4, as I did not want to lug this big lens around all day and there was plenty of light. There was some CA from both lenses, at the short end of the Sigma and at the long end of the Pentax. I corrected this CA as best I can in SilkyPix Pro 4 but you'll notice some CA still on the ramp edge.
The shots are taken at 120m distance using the 300mm FL. To give you an idea of cropping, a standing subject is about 25% of frame height in this situation.
Most of the day I shot in a TAv 2-shot bracket mode, with an -0.3 EVcomp, and - 0.7EV comp for the 2nd shot, so the total EVcomp was:
1st shot: -0.3 EVcomp
2nd shot: -1.0 EVcomp
I used this exposure bracketing as insurance in case I had any blown sky on the first shot. This also enabled me to use it as a mini-burst and I sometimes used the 2nd shot instead. At this particular show, the "Jet Stunt Extreme Show", I switched off bracketing after the first 6 shots and used Hi-Continuous and AF.C. Compared to the K20D, it's great having the extra speed and burst depth with raw.
The amazing thing was that, while there were jump ramps, the most spectacular somersaults and twists were done without them, instead using just momentum, bouncing (sometimes off the wake of a speedboat) and great power to launch the jet skis high into the air. Sometimes the somersaults were done in a row and some of the somersaults were performed at low height with the upside-down skier's head appearing to be dragging in or under the water. There's far too many to show here and this action suits viewing sequences. You can find more shots at
https://plus.google.com/photos/110304554160411023759/albums/5691818375568951873
Dan.
Last edited by dosdan; 12-30-2011 at 01:17 PM.