Samsung Galaxy S26 Ultra for Underwater Photography: Our 2026 Review

Diving with your smartphone is a reality. The Samsung Galaxy S26 Ultra arrives on the market with strong promises for underwater photography. Forget the marketing specifications. What matters is what it gives once under water, in natural light. We put it to the test. Is it a simple gadget or a real tool for the diving photographer? The goal is to see if this phone can really replace an expert compact camera for your underwater memories. Image quality, reactivity, and color management are the points we scrutinized. We are talking here about the field experience, the one that makes the difference between a beautiful photo and a missed opportunity.

The Samsung Galaxy S26 Ultra positions itself as a serious competitor. Its overall score is 4.2/5. It excels on several points, but requires some discipline. Here is our AquaExposure evaluation grid:

Ideal Profile: The diver who wants a versatile device, capable of beautiful underwater images without being burdened with heavy equipment. He is ready to invest in a good housing and master the basics of Expert RAW post-production. This is a choice for those looking for simplicity without sacrificing image quality.

B1 - Optics

The optics of the S26 Ultra are very high-performing. The images are sharp, with a good definition. The management of chromatic aberrations is controlled, even in difficult light conditions under water. The versatility of the lenses is an asset. You can easily switch from wide-angle to telephoto with good quality. The key point is the capacity to capture fine details of marine subjects.

To go further: The S26 Ultra integrates high-quality lenses, optimized for clarity and reflection reduction. The software processing effectively compensates for distortions.

B2 - RAW

The Expert RAW mode is the real subject here. It allows capturing raw files with an extended color depth and dynamic range. This is what gives you the freedom to correct white balance and exposure in post-production. Without RAW, underwater photography is much more limited. The S26 Ultra makes a giant leap compared to previous models that did not offer this wealth.

To go further: The S26 Ultra, with its Snapdragon 8 Elite Gen 2, handles Expert RAW. This is an advancement compared to the S25/S25+ which did not have heavy native Log, or the S23/S23 Ultra with their more limited management of RAW.

B3 - Storage

The internal storage is generous. This is important because RAW files are heavy. Data transfer is fast thanks to USB 3.2 (10 Gbps) and Wi-Fi 7. You will not lose time emptying your card after each dive. Quick Share is very efficient for wireless transfers. This greatly simplifies the field workflow.

To go further: The S26 Ultra benefits from USB 3.2 (10 Gbps) and Wi-Fi 7, just like the S24 Ultra. This is an advantage over the S25/S25+ and S23/S23 Ultra which were content with USB 3.2 (5 Gbps) and Wi-Fi 6E.

B4 - Thermal

The titanium chassis of the S26 Ultra is a plus. It helps with heat dissipation. When diving, water temperature helps too, but a good chassis reduces the risk of overheating and condensation inside the housing. This is a recurring concern with aluminum phones like the S23 or S23 Ultra, where the risk of condensation was high.

To go further: The S26 Ultra uses a titanium chassis, just like the S24 Ultra. The S23, S23 Ultra, S25, and S25+ models are in aluminum, which can pose condensation problems in cold environments.

B5 - Battery

Battery life is a strong point. The battery of the S26 Ultra is capable of holding several dives. For a day of three dives, with reasonable use, you should be fine. However, the cold of the water can slightly reduce battery life. It is always wise to have an external battery close by, especially if you film a lot.

To go further: The battery capacity of the S26 Ultra is optimized by the Snapdragon 8 Elite Gen 2, offering better energy efficiency.

Before each dive session, remember to check your external battery. Use our portable power bank comparator to choose the right power bank for your housing and autonomy needs.

B6 - Autofocus

The autofocus is fast and precise. Under water, where light is often weak and subjects are moving, this is what counts. The S26 Ultra locks on subjects well, even in difficult conditions. This reduces the number of blurry photos and increases your chances of capturing the perfect instant. Reactivity is there.

To go further: The Snapdragon 8 Elite Gen 2 of the S26 Ultra improves autofocus performance, especially in low light and on moving subjects.

B7 - Housing

Choosing the housing is the real subject for diving. For the S26 Ultra, you need an adapted housing. The Divevolk SeaTouch 4 Max is a popular option, but make sure you get the Platinum version for recent Ultra models. A good housing guarantees waterproofing and access to the phone's functions. Without a reliable housing, your S26 Ultra will never see the bottom.

To go further: The Divevolk SeaTouch 4 Max is compatible with all models, but the Platinum version is required for recent Ultra models to ensure optimal compatibility and a good seal.

Housings

The housing is the most important investment. Without it, no diving. The Divevolk SeaTouch 4 Max is a reference. Always check the exact compatibility with the S26 Ultra. Other brands offer housings, but quality and ergonomics vary. Do not skimp on this element. This is the safety of your phone and the success of your photos.

Field Workflow

The S26 Ultra simplifies the workflow. The fast transfer of photos via USB 3.2 or Quick Share is an asset. You can edit your RAW files directly on the phone with dedicated apps. This allows fast sharing of your shots. Prepare your phone before the dive: charge it, empty the memory if needed, and check the waterproofing of the housing.

Points of Attention

Managing the white balance under water remains a challenge for all smartphones. Even with RAW, you will often need to correct in post-production. Natural light varies enormously. Learn to anticipate these variations. Avoid too marked backlights. Condensation can always be a problem if the phone heats up too much before being put in the cold housing.

Price

The Samsung Galaxy S26 Ultra is a high-end phone. Its price is consequent. Add to that the cost of a good housing. It is an investment. But for a device that combines daily phone and high-performing underwater photo tool, the value for money can be interesting for some divers. Consider the whole ecosystem.

The Samsung Galaxy S26 Ultra is an excellent choice for natural light underwater photography. It does not replace a dedicated camera with a large sensor, but it comes dangerously close for an enlightened amateur use. The Expert RAW mode and fast connectivity are major assets. If you are looking for a versatile and performing diving companion, the S26 Ultra, well equipped with an adequate housing, is a real option. It will allow you to bring back beautiful memories without ruining yourself in heavy photo gear. It is a reliable tool to explore the underwater world.

Want to master underwater photography with your Samsung Galaxy S26 Ultra? Our AquaExposure training guides you step by step. Discover our courses and workshops on the platform: AquaExposure training. Transform your dives into photographic masterpieces.

To learn more about condensation and overheating, read our dedicated article: Smartphone overheating and fogging in an underwater housing.

Are you hesitating between several devices? Use our diving photo gear comparator to compare this device with other tested models.