Underwater Photography: A Guide for Traveling Divers

My first underwater photo was a blurry green smear of a parrotfish in Utila, Honduras. I had rented a cheap housing, had no idea how white balance worked at depth, and the result looked like it was taken through a glass of pond water. Five hundred dives and three camera setups later, I can tell you exactly what gear you need, where to use it, and how to avoid the mistakes I made.

"The ocean stirs the heart, inspires the imagination and brings eternal joy to the soul." — Wyland

Choosing the Right Underwater Camera Housing

The camera housing is the most important and expensive piece of underwater photography gear, and cutting corners here is a false economy. A flooded housing destroys the camera inside it, so reliability is non-negotiable. For Sony mirrorless systems, the Nauticam NA-a7C II housing is the gold standard: it is machined from aluminum, rated to 100 meters, and provides access to virtually every camera control. At around $2,200, it costs more than the camera body, but the build quality and ergonomics justify the price. I have taken mine to depths of 40 meters in Raja Ampat without a single issue.

Budget-conscious divers should look at the Ikelite housing for their specific camera model. Ikelite housings are made from polycarbonate rather than aluminum, which makes them lighter and less expensive (typically $800 to $1,200) while still being rated to 60 meters. The trade-off is durability: polycarbonate can crack under extreme pressure or if dropped on a hard surface, and the controls are not quite as smooth as Nauticam's. For recreational diving depths of 18 to 30 meters, Ikelite housings are perfectly adequate, and many professional underwater photographers use them as backup systems.

Before every dive, inspect the housing O-rings carefully. Remove each O-ring, clean it with a lint-free cloth, apply a thin film of silicone grease, and reinstall it. A single grain of sand or a hair on an O-ring can cause a flood. I maintain a ritual: I assemble my housing the night before a dive day, never on the boat where salt spray and movement make mistakes more likely. I also do a predive soak test in a bucket of fresh water for ten minutes, watching for any bubbles that indicate a leak. This ten-minute routine has saved my gear at least twice.

Strobes Versus Video Lights

Light is the fundamental challenge of underwater photography. Water absorbs red light within the first five meters, orange by ten meters, and yellow by fifteen meters, which is why everything looks blue at depth. You have two options for adding light back: strobes (flash units that fire in a fraction of a second) or continuous video lights. For still photography, strobes are the better choice because they freeze motion and produce far more power per burst than any continuous light can match.

I use two Sea & Sea YS-D3 strobes, which cost about $1,100 each and are compact enough to mount on the housing's tray arms without making the setup unwieldy. Two strobes allow you to light a subject from different angles, reducing harsh shadows and bringing out natural colors. For macro photography of small subjects like nudibranchs, pygmy seahorses, or coral polyps, a single strobe is often sufficient. For wide-angle reef scenes or shipwrecks, two strobes are essential to cover the larger area. Sync them using fiber optic cables, which are more reliable than electrical sync cords at depth.

Video lights have become increasingly popular, and for good reason: they show you exactly what the final image will look like before you press the shutter. The Keldan Luna 8 C video light produces 8,000 lumens and costs about $1,400. It is powerful enough for wide-angle still photography at close range and is ideal for shooting both photos and video on the same dive. The limitation is battery life: at full power, most video lights last 45 to 60 minutes, which is shorter than a typical dive. I carry a video light as a supplement to my strobes, using it for focus assist in dark conditions and for shooting video during safety stops.

Lens Selection for Underwater Work

Underwater photography divides into two categories, wide-angle and macro, and the lens you choose depends on what you want to shoot. For wide-angle, a rectilinear lens in the 16mm to 28mm range (full-frame equivalent) is standard. Behind a dome port, which corrects for the magnifying effect of water, a 16mm lens produces a field of view equivalent to about 100 degrees. I use the Sony FE 16-35mm f/2.8 GM II behind a Nauticam 140mm optical glass dome port, which gives me flexibility to shoot everything from coral reefs to whale sharks.

For macro photography, a 90mm or 100mm macro lens is ideal. The Sony FE 90mm f/2.8 Macro behind a flat port produces stunning detail on subjects as small as a grain of rice. In places like Lembeh Strait in Indonesia or Mabul in Malaysia, where muck diving reveals extraordinary tiny creatures, a macro setup is the only way to go. I have spent entire dives photographing a single two-centimeter hairy frogfish, and the detail the 90mm captures at 1:1 magnification is extraordinary.

A wet-mount diopter is a secret weapon that many underwater photographers overlook. It is a close-up lens that attaches to the outside of your housing's port while underwater, effectively magnifying your subject by about 30 percent. The Nauticam CMC-1 costs about $250 and threads onto most flat ports. I use it for super-macro work when even a 90mm macro lens is not close enough. The trade-off is reduced depth of field, which makes focusing more challenging, but the results are worth the effort when you are trying to fill the frame with a subject the size of your thumbnail.

Top Destinations for Underwater Photography

Raja Ampat in West Papua, Indonesia, is widely regarded as the best underwater photography destination on earth, and after three trips there, I understand why. The coral biodiversity is the highest recorded anywhere: more than 1,500 fish species and 600 coral species in an area roughly the size of Switzerland. The dive sites around Misool and Batanta offer encounters with manta rays, whale sharks, wobbegong sharks, and pygmy seahorses, often on the same dive. A seven-day liveaboard trip on a boat like the Damai II or the Indo Aggressor costs $4,000 to $6,000 including meals and diving, and the visibility ranges from 15 to 30 meters depending on the season. October through November offers the best combination of calm seas and clear water.

The Galapagos Islands in Ecuador are the destination for big animal underwater photography. Diving at Gordon Rocks, you are almost guaranteed to see hammerhead sharks in schools of 20 to 50 individuals, along with sea lions, marine iguanas, eagle rays, and occasionally whale sharks. The water is cold (18 to 22 degrees Celsius), so a 5mm or 7mm wetsuit is mandatory, and the currents are strong, making this a destination for experienced divers only. A seven-night liveaboard trip on the Galapagos Master or the Humboldt Explorer costs $5,500 to $7,000, and permits are limited to protect the marine environment. June to November is the best season for whale shark sightings.

For macro photography, Lembeh Strait in North Sulawesi, Indonesia, is unmatched. The black volcanic sand bottom looks unappealing from the surface, but it is home to an extraordinary concentration of rare critters: mimic octopus, flamboyant cuttlefish, rhinopias, stargazers, and dozens of species of nudibranch. I spent ten days diving with NAD-Lembeh Resort, which costs about $200 per night including three boat dives per day, unlimited shore diving, and all meals. The resort has a dedicated camera room with individual workstations, air guns for dusting sand off your gear, and staff who know where specific critters have been spotted that morning.

Techniques for Sharp Underwater Photos

Getting sharp photos underwater is harder than on land because water adds movement, reduces contrast, and makes autofocus systems work harder. The single most important technique is to get as close to your subject as possible. Every meter of water between your lens and the subject reduces contrast, sharpness, and color saturation. For wide-angle shots, this means getting within one meter of a reef or a shark. For macro shots, it means getting within ten centimeters. Water magnifies objects by about 25 percent, so subjects appear closer than they actually are, which helps.

Manual focus is often more reliable than autofocus underwater, especially in low-light conditions or when shooting small subjects against a cluttered background. I set my focus to the approximate distance of my subject, then make fine adjustments using the focus knob on the housing. For moving subjects like fish, pre-focus on a spot where you expect the subject to pass, then fire when it enters the focus zone. This technique works well for sharks, rays, and sea turtles that follow predictable paths along reef edges or current lines.

Shutter speed matters more underwater than most people realize. Even when your subject appears stationary, both you and the subject are moving with the current, the surge, and your own breathing. For still subjects like corals or nudibranchs, a shutter speed of 1/125th of a second is usually sufficient. For fish and other moving subjects, 1/200th to 1/320th is better. When shooting with strobes, the flash duration effectively freezes the subject regardless of shutter speed, but the ambient light portion of the exposure will still show motion blur at slow shutter speeds. I typically shoot at ISO 200 to 400, f/8 to f/11, and 1/160th to 1/250th of a second as a starting point, then adjust based on conditions.

Post-Processing Underwater Images

Underwater photos almost always need color correction because water absorbs warm tones progressively with depth. The first step in post-processing is white balance adjustment. If you shoot in RAW format (and you should), you can adjust white balance in Adobe Lightroom or Capture One with a single click of the eyedropper tool on a neutral-colored part of the image, like a sandy bottom or a gray fish. This alone can transform a blue-green image into something that looks natural.

For wide-angle shots taken with strobes, the foreground will have natural colors from the strobe light, but the background will still be blue. The trick is to balance the strobe-lit foreground with the ambient-lit background so the image looks cohesive. I adjust the background separately using a graduated mask in Lightroom, warming the tones slightly without affecting the foreground. This technique produces images where both the coral in the foreground and the water in the background look natural, which is the hallmark of professional underwater photography.

Backscatter, the white specks caused by strobe light reflecting off particles suspended in the water, is the most common problem in underwater photos. Prevention is better than correction: position your strobes on wide arms angled slightly outward and forward, so the light passes around the particles rather than bouncing directly back into the lens. If backscatter still appears in your images, the spot healing brush in Lightroom or the clone stamp in Photoshop can remove individual specks, but it is tedious work for heavily affected images. In murky water, consider switching to a single strobe positioned above and to the side, which reduces backscatter by limiting the angles at which light can reflect back toward the lens.

Traveling with Underwater Gear

Underwater camera gear is heavy, fragile, and expensive, which makes traveling with it a logistical challenge. A complete setup with housing, two strobes, arms, ports, and a backup camera weighs 12 to 15 kilograms in a padded case. I use a Pelican 1510 case with custom foam inserts, which meets airline carry-on size limits and provides military-grade protection. The case weighs 6.2 kilograms empty, and with gear inside, it pushes the typical 7kg carry-on limit on budget airlines. On airlines that weigh carry-on bags, I remove the strobes and pack them in checked luggage wrapped in clothes for padding, keeping only the housing and camera body in the carry-on.

Batteries for strobes and focus lights are subject to airline restrictions. Most airlines allow lithium-ion batteries up to 160 watt-hours in carry-on baggage, which covers most strobe batteries. The Sea & Sea YS-D3 uses a 2,000mAh battery rated at about 74 watt-hours, well within limits. Always carry batteries in your carry-on, never in checked luggage, as lithium batteries can catch fire in the cargo hold. Bring a power strip or multi-port USB charger for the hotel room, as dive resort rooms often have limited outlets.

Insurance for underwater camera gear is essential and is different from standard travel insurance. Most travel insurance policies have a per-item limit of $500 to $1,000, which does not cover a $6,000 camera and housing setup. DAN (Divers Alert Network) offers equipment insurance specifically for divers that covers accidental damage and flooding, with policies starting at about $200 per year for $10,000 in coverage. DEPP (Dive Equipment Protection Program) is another option. If you are traveling with more than $3,000 in camera gear, specialized dive equipment insurance is a worthwhile investment.