May 2, 2025, 9:32 am | Read time: 4 minutes
Whether it’s colorful schools of fish, impressive corals, or simply a diving selfie, underwater photography with a smartphone is becoming increasingly popular. However, seawater and pressure present challenges for the compact technology. TECHBOOK offers tips on how to successfully take photos underwater.
Many people are drawn to the sea for their vacation, whether it’s at local shores or as far away and exotic as possible. Those who want to capture their experiences photographically usually do so with a smartphone. At the beach, this is no problem, but in the water, it’s a real challenge. How do you take good photos underwater? And how do you protect your device accordingly?
Consider Lighting Conditions for Underwater Photos
Anyone who has tried taking photos underwater knows how challenging it can be. The lighting conditions are different, and the overall composition is extremely important, as is the adjustment of details like ISO and white balance. It’s advisable to familiarize yourself with the details of your smartphone’s camera app beforehand. Where are the settings hidden, and what is even possible?
It’s best to photograph in the direction of the sun, which is naturally diffused by the water. This way, you make the most of the natural light. However, you may need to consider particles floating in the water, which are most visible against the light — but can also be a beautiful part of an underwater image.
If necessary, you can also use additional equipment like an external flash. Water absorbs light, and as a result, colors appear washed out in photos. Additional lighting can better highlight the muted colors.
Perspective and Overall Composition
For example, Stiftung Warentest recommends that photographers place the smartphone very close to the subject for underwater shots. You should avoid ultra-wide-angle settings. An external macro lens may even be advisable to capture more details.
Additionally, autofocus can be more of a hindrance in this context. It’s recommended to turn it off beforehand and focus manually instead. Photograph interesting objects from as many perspectives as possible and take your time. However, always adhere to local regulations and avoid potential hazards. Try not to disturb wildlife and avoid environmental pollution and damage when taking underwater photos.
It’s also important to experiment as much as possible — especially if you’re not an experienced underwater photographer. Images look different in this scenario than what you’re used to with typical photos. You can also use scenarios like just below the water’s surface, which incorporate the view outside the water.
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The Best Waterproof Cases for Underwater Photos
Many current smartphones advertise a certain level of water protection, such as through IP certifications. But if you want to take photos in the sea, it’s best to play it safe. Sea water is aggressive due to its salt content, and the water pressure when diving poses a risk even for water-resistant devices.
A special underwater case not only protects against water intrusion but also ensures that camera quality doesn’t suffer. Stiftung Warentest tested seven hard and two soft smartphone underwater cases. Only three models received a “good” rating — one case particularly impressed in all areas.
Significant Price Differences
In the July issue of the magazine “test” (07/2024), seven hard cases for smartphones were examined. Prices ranged from 40 to a hefty 645 euros. The verdict was mixed: Three products were rated “good,” and three others were deemed “satisfactory.” One case only received a “sufficient” rating.
Additionally, Stiftung Warentest examined two inexpensive soft protective cases. These cost under 20 euros—but failed to impress. The verdict: “poor.” The testers concluded that these models are suitable only for protection against splashes and sand. Those who want “sharp, high-quality photos should spend more money.”
Test Winner Impresses with Best Handling
The clear number one in the test was the underwater case from Sealife (Sportdiver Smartphone Housing SL400-U). For 290 euros, users received not only very good image quality but also excellent handling. The overall rating: 1.8 — the best score in the test.
In second place was the case from Divevolk (Seatouch 4 Max), available for around 250 euros. It achieved an overall score of 2.3. The model from Kraken (Universal Housing KRH08 V2) for 460 euros followed closely with a rating of 2.4.
With material from dpa.