In short: For sharp underwater photos with an iPhone you need a rigid housing with flat or curved glass in front of the lens – not a soft pouch. If you want photos half above, half below the water (split shots), there has to be a dome port in front of the camera, otherwise you never get a straight waterline. Below 3 m almost all cheap cases drop out.
The three types of underwater iPhone housings
| Type | Price | Depth | Photo quality | Split shots |
| Waterproof pouch (PVC/TPU) | $10–25 | usually 1–3 m | soft, reflections, creases in the image | no |
| Hard case with flat glass | $30–80 | 10–40 m | good, but the waterline smears | only with luck |
| Housing with dome port | $100–170 | 10 m | good, straight waterline | yes |
Why a pouch isn't enough for photos
Pouches usually keep the iPhone dry, but the film never sits flat in front of the lens. The result is soft images, air bubbles and reflections. On top of that, the depth ratings on the packaging are often lab values. A pouch is fine for the pool and a beach day – not for photos you want to keep.
What a hard case can and can't do
A rigid housing with a glass window brings sharpness back and handles far more pressure. The problem only shows up at the surface: as soon as you shoot half above, half below the water, the waterline sticks right to the glass. It becomes a wide, smeared band that cuts the image in two. That is what the dome is for.
What the dome port does differently
The dome is an acrylic half-sphere about 10 to 15 cm across. It pushes the water several centimetres away from the lens. The waterline no longer runs directly in front of the lens but far ahead of it across the dome – as a thin, straight line. Above it you see beach and sky, below it the reef, both sharp. It is the same effect underwater photographers use with dome ports on big cameras, just for a phone.
The Domemare Smartphone Dome combines a rigid housing (waterproof to 10 m) with exactly this kind of dome. It fits iPhones and Android phones up to 6.7 inch, from the iPhone 13 up to the current Pro Max models.
The settings that matter underwater
Ultra-wide (0.5x): Otherwise the camera shows the edge of the dome. You also need the wide angle so that above and below water fit in one frame.
Video instead of photo: The touchscreen doesn't respond underwater in any housing. Start the video above water, dive in and save the best frames later. 4K stills from video are good enough for Instagram and prints up to A4.
Lock exposure first: Long-press the bright area before the phone goes into the housing. Underwater it can't adjust anymore, and the bright surface otherwise blows out.
Treat the dome: A water-repellent spray makes sure no drops cling to the dome when you surface. Without it, every second split shot has water spots in the upper half.
The mistakes that cost iPhones
Test the housing without the phone. Five minutes in the sink with a paper tissue inside shows whether the seal sits properly.
Sand on the seal. A single grain is enough for water to get in. Wipe the seal before every close.
Not rinsing off salt water. Salt dries on the seal and hardens it over time.
Going deeper than rated. Pressure rises by a tenth of a bar per metre, and every housing has a limit.
Which housing is worth it for whom
Pool, kids, beach day without photo ambitions: pouch.
Snorkeling, photos only underwater: hard case with flat glass.
Snorkeling, travel, split shots for the album or Instagram: housing with a dome port.
If you use the dome regularly, the Premium Care & Travel Kit with spare glass, Lotus Spray and beach bag is worth it – the dome picks up scratches from sand over time, and the spare glass is cheaper than a new housing.
Frequently asked questions
Will my iPhone fit? The Domemare Smartphone Dome takes phones up to 6.7 inch or 170 × 95 mm, camera bump included. That covers every iPhone from Mini to Pro Max.
Can I press the shutter underwater? No. Touchscreens don't respond underwater, whatever the housing. That's why you start video or a timer above water.
How deep can I go with an iPhone housing? Pouches 1–3 m, hard cases 10–40 m depending on the model, the Domemare dome 10 m. For snorkeling and freediving, 10 m is always enough in practice.
Isn't the iPhone's own water resistance (IP68) enough? Only for fresh water, short periods and without any guarantee from Apple. Salt water, pressure and open ports make it a gamble, and water damage is excluded from the warranty.
Read next: How to take split shots with your phone – the step-by-step guide and Phone dome, action cam or waterproof pouch – the comparison.
