There’s a popular tendency to ask a professional photographer about equipment. While it is much more challenging to find out the image-maker’s motivation, cultural perspective, conceptual framework and philosophical cultivation, the camera does matter. As a photojournalist, I need to be on top of fast-changing and varied situations on assignment, from battling Arctic snow and getting soaked in sea spray on geographic expeditions to running with a rioting crowd to capturing exquisite nightlife photos under extreme low-light conditions. There’s no escaping, only a high-end digital SLR would do. I chose Canon over Nikon, simply because it is more widely available, …