Nikon's D5 is a full-frame professional DSLR designed for shooting fast action in tough environments. To test the D5's market-leading autofocus system, we took the camera out to Santa Fe, and put one in the hands of professional photographer Michael Clark.

In this field test, DPReview's technical editor Rishi Sanyal joined Michael to shoot a range of activities, including dirt bikes and white-water kayaking. Watch the video to see how the D5 performed. 

This is sponsored content, created with the support of Nikon. What does this mean?