Scuba Diver Ocean Planet Issue 04/2016 | Page 124

Tips and Techniques 14 NOVICE KELP FOREST: • Getting a great shot of the kelp requires a lot of illumination! Not only does the canopy block the sunlight, but the leaves themselves absorb quite a bit of light. To get a wide view of the forest, start with the sun at your back, use a mid-range aperture such as f/8 and a slow to medium shutter speed (start at 1/100s and adjust as needed). Get low so that you can shoot towards the surface and benefit from any light penetrating the canopy. • If you want to capture sunrays, it’s often easiest to start by choosing a small area of kelp for your foreground. 14 Few underwater Turn into the sun and select scenes can rival the beauty of a kelp forest a young kelp stalk that ends Equipment & settings: just below the surface. Set Canon EOS 5D Mark III, your strobes on a medium Sea & Sea housing, 8–15mm lens at 15mm, power, increase your shutter dual Sea & Sea YS-250 speed (a good starting point strobes, f/14, 1/250s, ISO200 is around 1/200s) and shoot up towards the rays. Taking 15 Approach kelp as a vertical structure: multiple images as the Inspecting leaves foreground kelp stalk sways during your ascent can naturally in the water column yield fabulous subjects, such as nudibranchs will help ensure that you Equipment & settings: capture an image with nice Canon EOS 7D Mark II, curve and movement. Bracket Sea & Sea housing, your exposures, making small 8–15mm lens at 15mm, dual Sea & Sea YS-D2 adjustments to aperture and strobes, f/16, 1/250s, ISO200 shutter speed as you shoot. EQUIPMENT CONSIDERATIONS SDTTL 122 DSLR/MIRRORLESS CAMERAS: Get close! The probability of limited visibility makes working close to your subject critical. For the best chance of success, follow the “10-percent rule”: Shoot a chosen foreground subject within 10 percent of the visibility; if your visibility is five metres, you should be no more than 0.5 metres from your foreground subject. For wide-angle photography, short focal length lenses, such as super-wide fisheye zoom lenses, are necessary. For macro photography, once again, the ability to get close to your subject is a necessity: 60mm macro lenses are the go-to for most California macro enthusiasts; if you prefer a 100mm macro lens, a dioptre to help you get closer to your subject is highly recommended. For many situations, entry-level strobes or powerful video lights are adequate, but for shooting fast-moving subjects, especially mako sharks and sea lions, high-output prolevel strobes with rapid recycle time will give you a better chance of capturing fleeting moments. 15