All photographs on this site were taken using Nikon D70 cameras in Ikelite underwater housings, mostly with the addition of Ikelite DS-125 Substrobes. For underwater pictures Mark uses a Sigma 15mm lens almost exclusively, occasionally using a 28mm Nikkor, and even more occasionally a 50mm Nikkor.

All pictures are shot in RAW, with minimal tweaking of levels and curves in Adobe Photoshop.