Innovative Capture Technology
Hydra features a photo capture technology that will merge together a large number of input frames. This brings more light into resulting images, among other things.
Simple & Powerful User Experience
Hydra interface consists of a capture button and a number of options for each mode.
Switch capture mode simply by swiping, just like the built-in camera. You can even hold after a swipe to continue changing to next modes.
5 Capture Modes
Hydra is more than an HDR app. It includes 5 modes for taking better pictures and videos: HDR, Video-HDR, Lo-light, Zoom, and Hi-Res.
HDR Mode
This mode continuously changes exposure parameters of the camera sensor to retrieve highlights and shadows from the scene, merging together up to 20 input frames. Rendering options (i.e. tonemapping) are provided at the end of the capture, before saving.
Video-HDR Mode
This mode uses single frame HDR technique. It captures the scene with darker exposure settings, and applies HDR tonemapper to generate final movie frame.
This mode also makes use of device single-frame HDR mode if available (iPhone 6 or later).
Lo-light Mode
For low-light conditions, Hydra amplifies the light by merging up to 10 images. Camera sensor is configured for high sensitivity, and specific image merging and denoising is applied to generate final image.
Zoom Mode
This mode generates 2x or 4x zoomed image with a super-resolution algorithm, just like the Hi-Res mode, but with a narrower field of view. The output has the same pixel dimensions as native sensor (typically 8 MP).
Hi-Res Mode
This mode was developed to capture more details. Specific super-resolution method is used to merge 50+ input images to generate images up to 32 megapixels (4x native sensor MPs). Hand motion is used to generate the missing pixels in the high-resolution output.
Overlay Grid
An overlay grid option is provided to compose the picture more easily, if needed.
Image Orientation
Hydra detects image orientation, and saves it into output image. This information is determined from accelerometer data, and works even if the device is orientation-locked.
Optimized Image & Metadata Viewing
Hydra gallery is able to display very large images (up to 32 MP), as well as metadata of taken pictures (including Hydra shooting mode).
Accurate Computation
Most internal computation is performed in floating-point for higher precision.
GPS/Location Metadata
Location is saved into images/videos taken with Hydra. You can disable this feature from Hydra settings.
Specific JPEG Encoding
Hydra uses a specific JPEG encoder to cope with large output images (up to 32 MP), speed and memory efficiency.
Saving of Unprocessed Photos
You can save native image without any kind of processing, alongside the processed one. This makes it easier to compare Hydra-processed and unprocessed images.
Integrated with Photo Albums
Hydra saves to and interacts natively with your photo album. This avoids duplicate photos.
Export Options
Photos can be exported or shared using standard iOS options or other installed apps / extensions directly from Hydra's gallery.
Inline Help
Help topics are available within the app for each capture mode. You can review them to help you take better pictures.

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