iPhone 17 Pro Underwater Photography Test: Our 2025 Score

The iPhone 17 Pro raises a question that few people were openly asking just two years ago: is the "standard Pro" model sufficient for underwater photography, or is it always necessary to go for the Pro Max?

This isn't a matter of brand ego. It's a practical question. The Pro Max weighs 27 grams more, measures 6.9 inches, and supports up to 2 TB of storage. The Pro is 6.3 inches, weighs 206 grams, and has a maximum storage of 1 TB. Within a Divevolk housing, these differences have concrete consequences for maneuverability, battery life, and the on-location workflow.

This test aims to answer a specific question: does the iPhone 17 Pro (the standard model, not the Max) live up to its promises for underwater photography, in real-world conditions where we are photographing live animals in natural light? And how does it actually differ from the Pro Max underwater?

This device is designed for: underwater photographers seeking a lightweight and compact setup, with a professional video workflow (ProRes RAW) and superior handling in a housing. Ideal for short-duration photo and video shoots in temperate or tropical waters.

This device is not ideal for: dives in cold water (below 15 degrees) due to the risk of condensation, and for days with 4 or more dives when recording continuous ProRes RAW, where the smaller battery compared to a Pro Max can become a limiting factor.

Score: 3.8/5Good news to start with: the optical system of the iPhone 17 Pro is identical to that of the 17 Pro Max. The three sensors are the same, with the same resolution and the same apertures. Underwater, the image quality produced by both models is strictly equivalent.

For subjects of medium to short distance, the main sensor (24mm, f/1.78) takes over. For macro shots - such as nudibranchs, fish eggs, and small porcelain items - the wide-angle lens automatically focuses at a distance of just 2 centimeters. This is one of the shortest macro focusing distances available on a smartphone, and it works without any additional accessories.For Further Information

Specifications of the three sensors: - Main (Fusion): 48 MP, f/1.78, 24 mm, 1/1.28" sensor, 2nd generation sensor-shift OIS, dual pixel PDAF. - Ultrawide Angle (UWA): 48 MP, f/2.2, 13 mm, 120 degrees, 1/2.55" sensor, macro at 2 cm. - Telephoto (periscope): 48 MP, f/2.8, 100 mm (4x + 8x optical), 1/2.55" sensor, 3D sensor-shift stabilization.

Native ISO range: estimated to be 55 to 7600 ISO (not officially published by Apple, but determined through Exif analysis using Halide). ProRAW buffer: noticeable slowdowns after 12-15 consecutive rapid shots at 48 MP, despite the 12 GB of RAM. Shutter lag: 20-30 ms (almost zero shutter lag in bright light, slightly longer in ProRAW in low light underwater).

The main 1/1.28" sensor remains in the category of large smartphone sensors, but is still below the 1-inch size of dedicated compact cameras. In turbid water or low light, this difference in surface area becomes noticeable.

The management of backlighting (diving towards the surface, grazing light) benefits from a new anti-reflective coating, estimated to be 33% more effective. Solar flare through the surface is better contained, with some residual reflections (ghosting) under very specific angles - a situation not yet documented in real diving conditions.

It's the same breakthrough as on the Pro Max, and it's not just empty marketing. The iPhone 17 Pro is the first smartphone in the world to natively record ProRes RAW video - and this capability is identical on both sizes of the Pro models.

This format captures all the raw data from the sensor before any color profile is applied. When diving, this significantly changes post-production: you can correct white balance non-destructively, just as you would with a RAW photo. The Blackmagic Camera app (iOS, free) provides access to manual white balance in Kelvin, which can be locked, as well as the ProRes RAW codec, Apple Log 2 (with 15 stops of documented dynamic range), and Genlock for synchronizing multiple iPhones during a shoot.

Two years ago, this workflow was only available on cameras costing 5000 euros.Going Further

RAW photo format: ProRAW, DNG 12-bit, natively supported in the Camera app. RAW video format: ProRes RAW (new since 2025, identical for Pro and Pro Max) up to 4K 120fps. Apple Log 2: A logarithmic profile for color grading, up to 15 stops documented. Manual video white balance: Kelvin setting that can be locked via Blackmagic Camera, also accessible through the native Camera app. Color science: Apple's proprietary ISP (Photonic Engine, A19 Pro chip), without third-party partnerships like Leica or Zeiss. Recommended apps: Blackmagic Camera (reference for video), Halide (RAW photo with Process Zero), Kino (cinematography).

ProRes RAW generates high data rates. For long video sessions, a USB-C NVMe SSD connected via OTG through the USB 3.2 Gen 2 port manages overflow between dives.

To understand the importance of RAW in underwater photography, the article iPhone + Divevolk: why I replaced all my equipment details the on-location workflow.

Score: 4.1/5The iPhone 17 Pro offers 256 GB, 512 GB, and 1 TB of storage. There is no 2 TB option (reserved for the Pro Max). In practice, for shooting in ProRAW format (approximately 25 MB per image) and a few ProRes HD video clips, a day of three 45-minute dives represents 15 to 40 GB of storage, depending on the settings and the frequency of shooting. The 256 GB model is sufficient for photography, with plenty of room to spare. For intensive ProRes RAW video recording, 512 GB is the minimum comfortable amount.

The USB-C 3.2 Gen 2 connector (nominal 10 Gb/s) allows you to transfer files to a portable SSD between dives, right on the boat, without needing a computer. A short USB-C cable and a 500 GB SSD are all you need. There is no external card slot - this is the only drawback in this area.

For more details Connector: USB-C 3.2 Gen 2, up to 10 Gb/s nominal (approximately 500-800 MB/s in practice to a compatible external SSD) Internal Storage: 256 GB / 512 GB / 1 TB (NVMe, no external slot) Difference between Pro and Pro Max: Maximum 1 TB on the Pro, 2 TB on the Pro Max. For pure photography, 1 TB is more than sufficient. Quick calculation: 3 dives of 45 minutes in ProRAW photo mode = approximately 20-40 GB, depending on the frequency. With a 256 GB model, you can get through a whole day without emptying the storage.

Score: 2.8/5The aluminum frame of the iPhone 17 Pro is identical to the Pro Max, with the same internal vapor chamber. Consequently, the risk is the same. This is the only real drawback of this test, and it's something that needs to be discussed before any purchase.

Aluminum conducts heat 20 times better than titanium (which was used in the iPhone 16 Pro). Combined with the vapor chamber, this provides excellent thermal management on the surface, especially during long video recordings. However, the problem is reversed underwater. When the iPhone transitions from an ambient temperature of 20 degrees Celsius to water at 12 degrees Celsius, the aluminum transfers the cold to the air trapped inside the housing. This cooled air then condenses on the internal surfaces, particularly on the front glass.

In tropical waters (above 25 degrees Celsius), the temperature difference is small, and the risk is minimal. In cold water (the Atlantic, the Mediterranean in winter, mountain lakes), this risk has been documented in previous generations of iPhones with aluminum frames. The Pro and Pro Max share the exact same level of risk in this regard.

[WARNING] Silica gel packets: mandatory. Aluminum frame + vapor chamber = maximum thermal conductivity. Without proper precautions, condensation below 15°C is almost certain. Place a silica gel packet inside the housing before each dive, allow a 5-minute acclimatization period in the shade, and check the O-ring each time you use it.Tropical Overheating: Encoding in ProRes RAW consumes 7 to 8 watts within the A19 Pro processor. In water at 28°C, the housing completely blocks heat dissipation. Software overheating occurs after approximately 12 minutes of continuous recording. For extended shoots in warm water, it is essential to sequence the footage into clips of 2 to 3 minutes with a 90-second pause between each clip.

For Further Information Housing Material: 7000 series aluminum (compared to the titanium of the iPhone 16 Pro) Internal Cooling System: Recycled copper vapor chamber Certification: IP68, 6 meters, 30 minutes (accidental only, housing required for diving) Ceramic Shield 2 on front and back Field Solution: Silica gel packet inside the housing, gradually acclimatize the iPhone for 5 minutes in the shade before closing, submerge the closed housing alone to equalize temperatures before inserting the iPhone. Check the O-ring each time it is used.

Score: 3.5/5

This is the most significant difference between the Pro and the Pro Max for diving. The iPhone 17 Pro has a 3998 mAh battery (international Nano-SIM model) or a 4252 mAh battery (US eSIM model). The Pro Max has a 5088 mAh battery. This difference represents approximately 25% less capacity.In practice, a day of two mixed photography dives goes smoothly. A day of three dives, with ProRes RAW video recording enabled for each session, is more demanding. For more than three dives, or when using a liveaboard, an external power bank of 10,000 mAh is recommended.

The standard Li-Ion battery chemistry remains a factor in cold water. Below 5 degrees Celsius, a Li-Ion battery can lose 20 to 40% of its effective capacity. This is not specific to Apple, but it's something to monitor during the winter.

For more information Capacity: 3998 mAh (international Nano-SIM model) or 4252 mAh (USA eSIM) Pro Max comparison: 5088 mAh (eSIM) - approximately 25% more capacity Chemistry: Standard Li-Ion (no silicon-carbon cell resistant to cold, unlike some Android competitors) Documented cycles: 1000 cycles before reaching 80% capacity (EU label) Apple video battery life: up to 33 hours of video playback (compared to 39 hours on the Pro Max) Before each dive session, remember to check your external battery. Use our portable battery comparator tool to choose the power bank that is right for your underwater housing and your desired battery life.

Score: 5.0/5The autofocus system is identical between the Pro and the Pro Max models. This represents the most comprehensive configuration available on a smartphone in 2025.

The LiDAR (3D Time-of-Flight scanner) physically measures the distance to subjects, even in turbid water. The dual-pixel PDAF covers 100% of the pixels on the main sensor. Apple's Photonic Engine incorporates AI-powered subject tracking that adapts in real time. The Blackmagic Camera app provides focus peaking for fine manual focusing.

In practice, underwater, this results in a device that locks onto slow-moving subjects (rays, turtles, grouper) without losing focus, and that maintains focus even when a curtain of bubbles passes between the sensor and the subject. For fast-moving subjects (barracudas, wrasses, flying fish), the combination of LiDAR, dual-pixel PDAF, and AI represents the best available technology on smartphone cameras in 2025.

For more information AF Technologies: LiDAR ToF 3D + dual-pixel PDAF covering 100% of pixels (main sensor) + Hybrid Pixels PDAF (ultrawide and telephoto lenses) + Photonic Engine AI tracking. Focus Peaking: via Blackmagic Camera iOS. LiDAR disableable: No, through the native app, yes in 100% manual focus mode via Blackmagic Camera. Note on animals: The LiDAR operates in the infrared spectrum, outside the visible spectrum, at very low energy levels. There is no documented impact on the behavior of marine animals.The article underwater smartphone photography: 2026 comparison positions this autofocus system among the best devices on the market.

Score: 5.0/5

Divevolk confirmed compatibility with the iPhone 17 (Pro and Pro Max) from the day of its launch, with specific adapter modules for the SeaTouch 4 Max Plus and SeaTouch 4 Max Platinum housings. Both Pro sizes use the same modules, which is a significant difference compared to previous generations where some adapters varied depending on the format.

These housings are certified to 60 meters. The SeaTouch gel membrane faithfully reproduces gestures on the iPhone screen, without physical buttons. You can access all functions from the back - including Blackmagic Camera. Sea Frogs and Nauticam offer alternatives (certified to 40 m and more), but complete touch access remains a feature exclusive to Divevolk.For More Information

Compatible housings: Divevolk SeaTouch 4 Max Plus, SeaTouch 4 Max Platinum (same Pro and Pro Max modules). Certified depth: 60 meters (200 feet). Screen access: SeaTouch touchscreen membrane (full access to the iOS interface and third-party apps). Alternative: Sea Frogs SF-PH-01-PRO Universal (40 m, physical buttons, Bluetooth, access to native app only). Availability: Modules announced and available starting September 2025.

For details on the field experience with the Divevolk, the article Divevolk SeaTouch 4 Max: Which one to choose compares the two available versions. To verify the exact compatibility of your smartphone and compare the usable volumes, be sure to check if the dimensions of your model fit into this housing.

Available Housings (June 2026)

The Divevolk SeaTouch 4 Max Plus and SeaTouch 4 Max Platinum remain the top choices. iPhone 17 Pro adapter modules are available directly on divevolkdiving.com. The same modules are used for the Pro Max: if you already have a SeaTouch housing for an iPhone 15 or 16, the update is done by replacing the internal module.Sea Frogs offers an alternative solution for depths up to 40 meters, with access controlled via Bluetooth buttons. While less versatile than the Divevolk (it doesn't offer access to third-party apps via touchscreen), it's a valid option specifically for underwater photography.

Field Workflow: What's Different Compared to the Pro Max

The main difference in real-world use is the battery life. With an iPhone 17 Pro shooting continuous ProRes RAW video (using the Blackmagic Camera app for 3 dives of 45 minutes each), it's best to have an external power bank of 10,000 mAh in your dive bag. For still photography in ProRAW without video, the battery easily lasts a full day.

The 6.3-inch format is more comfortable in the underwater housing for people with smaller or medium-sized hands. The weight difference (27 grams) is negligible during a dive.

Important Considerations

Condensation: The risk is the same as with the Pro Max, and the same countermeasures apply. Use silica gel packs inside the housing, allow the iPhone to acclimatize to the water temperature before closing the housing, and check the O-ring each time you use it.

Storage: The 1 TB storage limit can become a constraint for videographers working in ProRes RAW format on multi-day liveaboards. In this case, the Pro Max, with its 2 TB option, is a better choice. For photography, 512 GB is more than sufficient for a week of intensive shooting.

Current Prices (as of June 2026)New:

• Apple Store France (apple.com/fr): starting from €1,099 (256 GB) - source: idealo.fr, June 2026
• 512 GB: approximately €1,229 / 1 TB: approximately €1,449
• Fnac: prices aligned with the Apple Store, with financing options available.

Used / Refurbished: - Back Market France (backmarket.fr): Refurbished iPhone 17 Pro available, starting from approximately €750-850, depending on condition and capacity (estimate based on the usual 25-30% discount on Back Market for models less than a year old). - Leboncoin: listings between individuals, expect €900-1,000 for a 256 GB model in good condition (a tight market, recent model).

Note on prices: New prices are confirmed. Used prices are estimates based on Apple's secondary market data in June 2026 and the observed depreciation on comparable models. Check prices in real-time on backmarket.fr and leboncoin.fr before making any purchase.

The used market perspective: The iPhone 17 Pro is less than 9 months old (launched in September 2025). The used market is still tight. Back Market is generally safer than buying from an individual for this model: 1-year warranty, quality control, and a 30-day money-back guarantee.

Four point one out of five. That's what the iPhone 17 Pro scores for underwater photography in natural light.This score is only 0.1 point behind the Pro Max (4.2/5), and this difference is mainly due to the smaller battery. In everything else – optics, RAW capabilities, autofocus, and the housing – the two models are essentially equivalent.

The question of "Pro or Pro Max for diving" has a simple answer. If you primarily dive for photography or short video clips, the Pro is sufficient, and it's more compact, lighter, and 200 euros cheaper. If you are a videographer and record ProRes RAW footage on every dive, especially during days with 3 or 4 dives, the Pro Max's battery life justifies the extra cost.

For someone looking for their first serious underwater smartphone in 2025, or who is upgrading from an iPhone 15 Pro, the iPhone 17 Pro represents a real generational leap in one key area: ProRes RAW video. This is the main reason to buy this phone for diving.

For comparisons with other devices, the article iPhone 17 Pro Max underwater photography test provides details about the larger model.

Are you undecided? Use our underwater photography equipment comparator to compare this device with other tested models.To delve deeper into condensation and overheating, read our dedicated article: Overheating and fogging of smartphones in underwater housings.

No computational algorithm can replace precise positioning relative to the sun or stable buoyancy. In our AquaExposure underwater photography course, you learn the natural light exposure protocol and the passive approach to marine life to obtain sharp images without heavy equipment.

Check the compatibility and dimensions of your model on our smartphone housing comparator. For thermal prevention, also consult our guide on overheating and fogging of smartphones in underwater housings.