As a 700mm equivalent lens on the 1D Mark IV, I was a little tight for these bears with the 500mm, but I needed the frame rate of that camera to capture the sequential action. In order to increase resolution on this image, I merged a handful of photos that I took just seconds apart. While the polar bears remain the same, I added some snow and sky to give the image more negative space for type and other design content. I preferred the range and file size of my 1Ds for this scene, but the frame rate is not fast enough and the buffer fills up too fast when shooting fast action. Merging images to create more space is a retrospective solution, however, I find myself shooting adjacent space often in order to do this. Many times, it is the lack of space that can inhibit a photo sale in the stock photography market, and the added bonus of a much higher resolution helps also.