As a fitness photographer, I have had the opportunity to shoot a number of composite images showing the progression of an exercise. This particular series of photos was shot a few weeks back with fitness model, Hyla Conrad.
Combining images to show the action using high frame rates is one my favorite photo techniques.
We shot this exercise, in multiple runs on a tethered Canon 1DMKIII at a little over 10FPS catching over 45 frames per exercise at varying positions. Using this technique, we were able to get results like this:
For the tech head folks...
In order to make some sense of the exercise, we pulled out key frames at key body positions and scrapped the rest. Barring the occasional blink, we then stitched together multiple frames into one to create a single frame that showed the full exercise and body mechanics along the way. We overlayed each frame and used two images as the background...one each clear of the athlete on the left and right side. Cutting those two images together, we had our canvas. After each of the series of frames were in place each on a separate layer in Photoshop, we cut each frame to just the athlete. Checking overlapping bodyparts and making some decisions on which frames worked best. As you'll see by the screenshots below...this was a time intensive task, but the final product is well worth it!