1. Gear You'll Need:
* Waterproof Camera Housing: This is the *most* important piece of equipment. Make sure it's rated for the depth you plan to dive or snorkel to. Different housings are available for different camera types (smartphones, GoPros, DSLRs, mirrorless cameras).
* Dome Port (Essential): A dome port is absolutely crucial for over-under photography. A flat port won't work well because it will distort the image underwater and make it difficult to focus on both above and below the surface simultaneously. A dome port allows a wider field of view both above and below the water, and helps to create a sharper, clearer split. Choose a dome port that is large enough for your camera's lens. Larger domes generally perform better.
* Camera (Duh!): The type of camera you use will affect the image quality. GoPros are great for their wide-angle lens and ease of use, but DSLRs or mirrorless cameras with good low-light performance offer higher resolution and more control. Many modern smartphones also offer decent image quality when paired with a good housing.
* Weight (Optional): Depending on your housing and camera, it might be positively buoyant. A small weight attached to the bottom can help keep the dome port centered in the water.
* Lens Cloth (Microfiber): To keep the dome port clean and free of water droplets, salt spray, and fingerprints.
* Sunscreen (Reef Safe) & Protective Clothing: Remember to protect yourself from the sun, especially when shooting at the surface. Choose reef-safe sunscreen to protect the marine environment.
* Snorkel Gear/Dive Gear (Depending on the Depth): Obvious, but essential for your safety.
* Anti-fog solution: This will help prevent condensation forming inside the housing or on the dome port, especially in warmer climates.
2. Camera Settings:
* Aperture: A smaller aperture (higher f-number, like f/8, f/11, or even f/16) provides a greater depth of field, helping to keep both the above and underwater portions of the image in focus. Experiment to see what works best in your specific conditions.
* Shutter Speed: You'll need a fast enough shutter speed to freeze motion, especially if there's any movement in the water or waves. Start with 1/125th of a second and adjust as needed. If you are shooting stills, then increase the ISO if needed to maintain a fast shutter speed. If you are shooting video, consider using a neutral density (ND) filter to allow you to maintain a faster shutter speed and lower the ISO.
* ISO: Keep the ISO as low as possible to minimize noise. Increase it only if you need to compensate for a fast shutter speed in low-light conditions.
* White Balance: Set your white balance to "Auto" or use a custom white balance setting if your camera allows it. Underwater, red and orange tones are absorbed quickly, so you may need to adjust the white balance to correct the color.
* Focus: Autofocus can be tricky with split shots. Try setting your focus to a point halfway between the underwater and above-water elements. Alternatively, use manual focus and adjust until both are sharp.
* Shooting Mode: Aperture priority (Av or A) mode is often a good choice, allowing you to control the depth of field while the camera handles the shutter speed. Manual mode gives you full control over all settings.
* Image Format: Shoot in RAW format if your camera supports it. This will give you more flexibility when editing the images later.
3. Composition and Technique:
* Water Clarity is Key: Clear, calm water is essential for good over-under shots. Murky water will obscure the underwater portion of the image.
* Sun Angle: Shooting with the sun behind you or to the side can help illuminate the underwater scene and create more balanced lighting. Avoid shooting directly into the sun, as it can cause glare and blown-out highlights. Morning and late afternoon light are often ideal.
* Dome Position: Submerge the dome port halfway underwater. The water line should be as straight and horizontal as possible.
* Get Close to Your Subject: Getting closer to your underwater subject will improve clarity and reduce the amount of water between the camera and the subject.
* Interesting Above and Below: Think about what elements you want to include both above and below the surface. A coral reef underwater with a palm tree above can make for a compelling image.
* Angle and Perspective: Experiment with different angles and perspectives. Try shooting from a low angle, looking up toward the surface, or from a higher angle, looking down into the water.
* Keep the Dome Clean: Before each shot, wipe the dome port clean of any water droplets, salt spray, or fingerprints. Even a small amount of dirt or water can ruin the image. Consider applying a hydrophobic coating to the dome.
* Consider a Wide-Angle Lens: A wide-angle lens will allow you to capture more of the scene both above and below the water.
* Practice and Patience: Over-under photography takes practice. Don't be discouraged if your first few attempts aren't perfect. Keep experimenting with different settings and techniques until you get the results you're looking for.
* Use Burst Mode: Use burst mode, or take multiple photos in quick succession. This will increase your odds of capturing the perfect split shot with minimal water droplets on the dome.
* Stabilization: If using a GoPro, use image stabilization to help reduce blurring.
4. Post-Processing:
* Color Correction: Adjust the colors in your images to make them look more natural. You may need to boost the blues and greens in the underwater portion of the image and correct the exposure.
* Sharpening: Sharpen the image to bring out details and improve clarity.
* Cropping: Crop the image to improve the composition.
* Removing Imperfections: Use a cloning tool to remove any blemishes or distractions from the image, such as water droplets or dirt on the dome port.
Safety Considerations:
* Be Aware of Your Surroundings: Be aware of your surroundings and avoid shooting in dangerous areas.
* Dive Within Your Limits: If diving, dive within your limits and always dive with a buddy.
* Respect Marine Life: Respect marine life and avoid disturbing or harassing animals.
* Check Your Gear: Before each dive or snorkel, check your gear to make sure it is in good working condition.
By following these tips, you can capture stunning over-under photos that showcase the beauty of both the underwater and above-water worlds. Good luck, and have fun!