Underwater color correction, answered.

DeepColors corrects underwater photos and video automatically — the moment you open them — by recovering the red light that water absorbs with depth, then stretching each color channel for natural contrast. Unlike most dive color apps it grades video with keyframes, preserves HDR, and can export a .cube LUT or 4K HDR / ProRes for your desktop editor. It runs on iPhone, iPad and Mac.

Water absorbs light by wavelength. Red is essentially gone by about 5 metres, orange by 10, and yellow by 20 — so with depth everything drifts toward blue-green. DeepColors reverses that absorption instead of just adding a fixed red filter, which is why the result looks natural rather than over-corrected.

No. A physical red filter helps but is fixed to one depth and steals light. DeepColors corrects in software after the dive, adapts to each shot, and with keyframes can follow a clip that changes depth. Many divers shoot without a filter and correct in the app instead.

Yes. Export your correction as a .cube 3D LUT and apply it in any editor that supports LUTs, so your DeepColors grade travels with the footage. Exact reproduction can vary with each editor's color management — DaVinci Resolve gives the closest match.

Yes. Masks let you apply adjustments to only part of a photo. Select a subject with on-device AI, paint an area with the brush (with adjustable hardness and edge awareness that snaps to edges), or add a linear or radial gradient. Each mask has its own complete set of filters — brighten a fish, or darken the water towards the bottom of the frame. Masks are available for photos.

Yes. With Premium you can create a custom watermark from your own logo (PNG, JPEG, SVG, HEIC and more) and/or a name such as your dive shop or Instagram handle. Set the opacity, the size and the position — any corner or bottom-center — and preview it on the actual photo or video frame before you export. It's saved, so every photo and video you export afterwards carries it automatically, and you can switch it off at any time.

Yes. Dive shops, dive centers, liveaboards and instructors use DeepColors to color-correct guests' dive photos and videos in seconds and brand them with their own logo watermark before sharing. Correction is automatic on import, exports go up to 4K HDR, and because every shared photo or clip carries your logo, it works as word-of-mouth marketing for your dive business. It runs on iPhone, iPad and Mac, with no account and nothing uploaded.

Yes. The correction is based on color analysis, not scuba-specific metadata, so it works for freediving, snorkeling, holiday reef clips and even swimming-pool footage.

It's free to download and try. A Premium subscription removes the DeepColors watermark, lets you add your own logo watermark instead, and unlocks .cube LUT export and 4K HDR / ProRes video export. There's no account, and your photos and videos are processed on your device rather than uploaded to a server (the subscription itself runs through Apple's App Store, like any iOS app).

Yes — it's a native Mac app as well as iPhone and iPad, sharing the same color engine. On Mac you can also open camera RAW files such as Sony .arw.