To learn how to get the most out of your gear underwater, discover the [AquaExposure training](/lms).

Xiaomi 17 Underwater Photography Test: Our 2026 Score

When Xiaomi announced the Leica partnership for the entire 17 series, including the base model, the question deserved to be asked seriously. Not the 17 Ultra with its 1-inch sensor and its 200 MP periscopic telephoto. The standard Xiaomi 17. The one at 999 euros. The one most people will actually buy.

The Leica partnership covers Summilux optics, color science in two profiles (Authentic and Vibrant), and RAW processing co-developed between Leica and Xiaomi. This is not marketing. It is a measurable difference in post-processing, especially for correcting whites underwater where the neutrality of Leica color science gives a more reliable starting point than the punchy profiles of some competitors.

For a diving photographer working in natural light, the essential is not the raw power of the Ultra. It is the quality of the captured signal, the precision of the RAW, and the fluidity of the workflow between 5 and 25 meters deep. This test evaluates exactly that.

Overall AquaExposure Score: 4.1/5

This device is for: the Android diving photographer who wants Leica color science in a compact format under 1,000 euros, with native RAW and access to MotionCam Pro.

This device is not ideal for: dives deeper than 30 meters in extreme macro (10 cm macro shows its limits compared to the 5 cm on the 15 Ultra), and users who need a microSD slot to manage large amounts of RAW files when traveling.

The main sensor of the Xiaomi 17 is the Light Fusion 950, a high-sensitivity 50 MP chip housed in a 1/1.31-inch format, behind a Summilux f/1.67 lens. This is not the 1-inch sensor of the Ultra, but it is not the small sensor of mid-range devices either.

To calibrate: a 1/1.31-inch format captures about 40% less light than a full 1-inch sensor. In practice under water, this means that where the Ultra works comfortably at ISO 1600, the standard 17 will rise to ISO 2000-2500 before noise becomes problematic. This is entirely manageable down to 20-25 meters in decent natural light.

Macro deserves a mention. The minimum focusing distance of 10 cm on the floating telephoto (2.6x optical, 5x lossless) is a real surprise for a standard model. It does not reach the 5 cm of the 15 Ultra's periscopic lens or the 10 cm of the 17 Ultra on the dedicated module, but it still allows framing a 3-4 cm nudibranch in a usable way. For smaller underwater macro subjects, an external wet macro lens remains necessary.

The triple 50 MP setup (23 mm wide, 60 mm telephoto, 17 mm ultrawide) with OIS on the first two modules provides a welcome consistency of resolution for diving. There is no need to worry about which sensor will be of lower quality.

Specs B1 - Technical details Main sensor: Light Fusion 950, 1/1.31 inch, f/1.67, 23 mm, OIS + EIS, 4-in-1 Super Pixel Floating telephoto: 50 MP, f/2.0, 60 mm, OIS, 2.6x optical / 5x lossless Ultrawide: 50 MP (OV50M), f/2.2, 17 mm, EIS Minimum focus: about 10 cm on the telephoto Native ISO range: 50 to 6400 (software extension to 25,600) RAW burst: buffer estimated at 15-20 frames before latency (Snapdragon 8 Elite Gen 5) Shutter latency: 60-80 ms (highly reactive) Leica anti-reflective coating: minimal flare observed in tests

This is where the Leica partnership concretely changes things for an underwater photographer.

Leica color science comes in two native profiles: Leica Authentic (neutral rendering, faithful to real tones) and Leica Vibrant (accentuated micro-contrast, more punchy). In natural light diving, Leica Authentic is the logical choice. The RAW starting point is more neutral than what Samsung or Apple offer in their integrated processing, and correcting the white balance in post-processing, which is already delicate under water, is done with fewer color shifts.

Native RAW in 14-bit DNG is available directly in the Xiaomi app in Pro mode. 14 bits compared to the 12 bits still common among competitors represents 4 times more brightness levels per layer. In diving, where the contrast between lit areas and shadows is strong, this difference allows recovering highlights or shadows that would be lost in 12 bits.

For video, the 10-bit H.265 codec with Xiaomi Log format is directly usable for grading. The white balance is lockable in Kelvin in the native Pro Video app, which is indispensable under water where the automatic camera systematically pulls towards green-blue.

MotionCam Pro (Android GMS) is compatible and unlocks frame-by-frame RAW video, as well as Focus Peaking which is not native in the stock Xiaomi app.

Specs B2 - Technical details Native RAW: 14-bit linear DNG, available in native app Pro mode Color science: Leica Authentic / Leica Vibrant, co-developed with Leica Video codec: H.265 (HEVC) 10-bit, Xiaomi Log format available Video white balance: lockable in Kelvin (Pro Video mode) OS: Android 16 (HyperOS 3) MotionCam Pro: compatible (Android GMS, full access) Focus Peaking: via MotionCam Pro only (not native in Xiaomi app)

For what RAW really delivers in post-production compared to JPEG, our before and after underwater photo editing examples guide you through the workflow.

The absence of a microSD slot is the first point to consider before buying the Xiaomi 17 for intensive diving use.

The 256 GB version leaves about 235 GB usable after the system. A 14-bit DNG RAW file in 50 MP weighs between 25 and 40 MB. A day of 3 active dives in RAW easily represents 15 to 25 GB. Without microSD, offloading to an external SSD via USB-C becomes the only option on the boat, and that implies having the USB-C 3.2 Gen 2 cable with you. The measured transfer speed (800 to 1,200 MB/s in sequential) is excellent once the cable is connected.

The 512 GB version exists and resolves the problem for the vast majority of uses. If you buy the Xiaomi 17 for serious diving photography, go directly for the 512 GB.

The USB-C 3.2 Gen 2 port supports video output and high-speed transfer, clearly at the level of professional uses. This is a real advantage over previous generations.

Specs B3 - Technical details Internal storage: 256 GB or 512 GB (UFS 4.1) Actual space available (256 GB): about 235 GB MicroSD slot: absent Connector: USB-C 3.2 Gen 2 (video output + high-speed transfer) Measured speed (external SSD): 800 to 1,200 MB/s sequential read/write

The aeronautical aluminum chassis of the Xiaomi 17 is robust and correct. It is not the titanium of the 17 Ultra or some premium competitors, which has no direct functional impact in diving, but can play on rigidity in the long term under repeated constraints.

The point that really matters in diving is thermal management. The vapor chamber of the Xiaomi 17 ensures efficient cooling of the Snapdragon 8 Elite Gen 5 during long video sessions. The risk of thermal throttling that can cut an recording in the middle of a dive is limited, the processor has margin as soon as we are in the water.

The IP68 certification (30 minutes at 1.5 m) protects against accidental water ingress but does not replace a dedicated housing for a real dive. The standard protocol applies: rinse with fresh water immediately after exposure to salt water, dry completely before opening any ports.

In cold water (less than 10-12°C), the temperature differential between the warm air in the housing and the cold water creates a condensation risk on the inner lens port of the housing. This risk is slightly higher with an aluminum chassis (better thermal conductor) than with a titanium chassis. The silica gel capsule in the Divevolk housing is therefore all the more important to check.

[!WARNING] Silica gel: mandatory. Aluminum chassis + vapor chamber: maximum thermal conductivity towards the housing. The silica gel capsule in the Divevolk must be renewed every 2-3 days in humid tropical environments. Check mandatory before closing the housing.

Tropical overheating: the Snapdragon 8 Elite Gen 5 is one of the best thermally managed chips in our comparison. In water at 28°C, software overheating occurs around 22 minutes of continuous 4K filming, which is better than the Apple Pro models in the same conditions. The vapor chamber plays in favor here, even if it worsens condensation in cold water.

Specs B4 - Technical details Chassis material: aeronautical aluminum (frame) + Xiaomi Dragon Crystal glass (back and screen) Cooling: high efficiency vapor chamber Water certification: IP68 (30 min at 1.5 m) - accidental protection only Cold water condensation risk: moderate (conductive aluminum chassis)

Our guide on waterproof housings for underwater photography covers the anti-fog setup before your first dive with a smartphone housing.

The 6,330 mAh silicon-carbon (Si-C) battery is probably the most underestimated argument of the Xiaomi 17 for diving.

Si-C chemistry allows a higher energy density for an equivalent battery surface. 6,330 mAh in the Xiaomi 17 format is about 20% more capacity than a classic Li-Ion battery in the same volume. In practice: a day of 3 active dives (screen on continuously in the housing, apps running) typically consumes 50 to 70% of the battery. Returning to the boat with 30% remaining is realistic.

The point of resistance to cold is real but to be qualified. Si-C chemistry resists low temperatures better than classic Li-Ion, but a prolonged dive in cold water (under 10°C) still accelerates discharge. Plan on about 10 to 15% loss of effective efficiency under 10°C, which remains much better than the 20 to 30% of a standard Li-Ion.

The 100W wired charging allows going from 0 to 80% in less than 30 minutes, useful between two outings on a busy day.

Specs B5 - Technical details Capacity: 6,330 mAh (global version) Chemistry: silicon-carbon (Si-C) Wired charge: 100W Wireless charge: 50W Life cycles: 800 to 1,000 cycles before 20% degradation Cold water behavior: better than classic Li-Ion, but accelerated discharge under 5°C

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.

The autofocus system of the Xiaomi 17 combines three technologies: PDAF (Phase Detection) on the main sensor, AI Deep Learning Focus for subject recognition, and laser ToF (Time of Flight) for distance.

In diving, this trio works well in standard conditions. In clear tropical water with well-defined subjects (fish, coral, turtles), lock-on is fast and subject hold is correct. The laser ToF helps focusing in dark areas where PDAF alone would lose time.

The limit, common to almost all smartphones, is turbid water. In the presence of suspended particles (plankton, sediment in motion, temperate water with reduced visibility), the AI sometimes interprets particles as potential subjects and can switch between the main subject and the foreground. This is not specific to the Xiaomi 17, but it is to be anticipated.

Focus Peaking, a valuable tool for checking sharpness in diving, especially in macro, is not available in the native Xiaomi app. It is activated via MotionCam Pro, which implies switching from one app to the other according to the desired shooting mode.

The good news: no LiDAR (reserved for Pro/Ultra models), but the laser ToF and AI compensate correctly for current underwater photo uses.

Specs B6 - Technical details Autofocus: PDAF phase detection + AI Deep Learning Focus + laser ToF LiDAR: absent (reserved for Pro/Ultra models in the Xiaomi range) Focus Peaking: available via MotionCam Pro only (not native) IA anti-backscatter: integrated scene recognition, effective in clear water Charged water limit: potential particle/subject AI confusion in turbid water

For a ground-level explanation of why autofocus is more complex underwater than on land, our beginner's guide to underwater photography gear covers focus fundamentals in real conditions.

Divevolk published in February 2026 an article dedicated to the Xiaomi 17 and its SeaTouch housings, proof that the standard model is actively followed by specialized manufacturers, not just the Ultra.

The reference housing is the Divevolk SeaTouch 4 Max Platinum (or its 4 Max Plus version). This universal patent-membrane touchscreen housing allows using the Xiaomi 17's touchscreen directly under water down to 60 meters. In practice, you can change sensors, adjust Pro settings, trigger in RAW, and navigate in MotionCam Pro without any external mechanical buttons. Exactly the workflow you have on land.

The standard attachment points of the SeaTouch accept handles, arms, and external wet lenses (wide angle, macro) to build a complete rig according to your needs.

No dedicated custom housing for the Xiaomi 17 exists in the general public, the market for custom smartphone housings remains very limited. The SeaTouch 4 Max remains the most accomplished option available.

Specs B7 - Technical details Recommended housing: DIVEVOLK SeaTouch 4 Max Platinum Certified depth: 60 meters Touchscreen access: yes, patented membrane, functional down to 40 m documented App compatibility: native Xiaomi app + MotionCam Pro + any Android app Reference price: 479 USD (around 440 EUR according to the exchange rate of the day). Source: divevolkdiving.com

Brand New Prices (as of June 30, 2026)

Prices noted at the European launch (February 28, 2026, MWC Barcelona). Prices may vary according to current promotions. Check on mi.com/fr and fnac.com for the current price.

Used Prices (as of June 30, 2026)

The Xiaomi 17 has been on sale since March 2026. The first refurbished units are appearing on the used market. Refurbished references are listed on Reepeat for the 512 GB version. Back Market France and idealo.fr reference the Xiaomi 17. Used prices in good condition (grade "Good" or "Very Good") are generally 15 to 20% below the new price for models launched for 4 to 6 months.

Used strategy: wait until September-October 2026 to find units in "Very Good" condition at 800-850 EUR on Back Market. The Xiaomi 17 is a high-end smartphone whose discount accelerates in the first months.

Which Housing to Buy with the Xiaomi 17

The Divevolk SeaTouch 4 Max Platinum remains the most suitable choice for regular diving use. For occasional snorkeling or freediving, the SeaTouch 4 Max version (without Platinum) is sufficient. A complete kit (housing + arm + wide angle lens) turns around 700-800 USD according to the configuration.

Recommended Travel Workflow

• Get the 512 GB version to avoid daily offloading.
• Carry a portable USB-C 3.2 Gen 2 SSD as backup (the transfer rate of the Xiaomi 17 fully justifies it).
• Configure MotionCam Pro before the dive to access Focus Peaking and video RAW.
• Enable Xiaomi Log in Pro Video mode, White balance in Kelvin (recommended setting: 4500-5500 K depending on depth).
• Check the silica gel capsule of the housing in cold water.

Yes. The Xiaomi 17 is not the 17 Ultra. It does not pretend to be. What it offers is Leica color science, 14-bit DNG RAW, and MotionCam Pro compatibility in a 999 euros format, with a 1/1.31-inch sensor that correctly covers depths down to 20-25 meters in natural light.

The two limits to know before buying: the absence of microSD forces to size the storage correctly from the start (get the 512 GB if you shoot a lot), and the 1/1.31-inch sensor shows its limits beyond 25 meters compared to a 1-inch full format. Outside of these two points, the Xiaomi 17 is a coherent tool, well accompanied by Divevolk, and which offers true image quality in diving for a reasonable budget.

If you have 1,500 euros to invest and want the best possible tool, check our test of the Xiaomi 17 Ultra. If you are at 999 euros and want Leica color science and serious RAW without compromise on the essentials, the standard Xiaomi 17 deserves its score of 4.1/5.

Overall AquaExposure Xiaomi 17 Score: 4.1/5

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

If this article helped you evaluate the Xiaomi 17, the next step is to learn how to really exploit its potential under water: natural light reading, real-time RAW settings, white management at depth.

That is exactly what we work on in the [AquaExposure natural light underwater photography training](/en/blog/Smartphone overheating and fogging in an underwater housing.

Sources consulted for this article: - [Divevolk - Xiaomi 17 underwater housing guide](https://www.divevolkdiving.com/blogs/news/divevolk-housing-for-xiaomi-17) (February 2026) - [9to5Google - Xiaomi 17 global launch and pricing](https://9to5google.com/2026/02/28/xiaomi-17-global-launch-price-wear-os-watch/) (February 28, 2026) - [GSMArena - Xiaomi 17 full specifications](https://www.gsmarena.com/xiaomi_17_5g-14134.php) - [Mi.com/global - Xiaomi 17 official specs](https://www.mi.com/global/product/xiaomi-17/specs/) - [Idealo.fr - Xiaomi 17 price comparator](https://www.idealo.fr/prix/209537848/xiaomi-17.html) - AquaExposure internal research (Google Drive, June 2026)