<strong>Hydra</strong> <br><a href="https://itunes.apple.com/us/app/hydra-amazing-photography/id947824428?mt=8" rel="noopener" target="_blank">iOS</a> | $4.99
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iOS | $4.99

Hydra shoots, processes and merges multiple images in an effort to produce a higher quality image. It offers five capture modes: HDR, Video-HDR, Lo-light, Zoom, and Hi-Res. Depending on available light, Hydra can merge up to 60 frames to create a single high-resolution shot, with an output of up to 32-megapixel images.

Hydra's best use case is dimly lit, moody landscapes or interiors where you are able to hold your phone stock still — the app will not complete a shot if there’s too much motion. The HDR mode captures up to 20 images in challenging lighting conditions while the Video-HDR setting uses single-image tone mapping or a special sensor mode (for the iPhone 6), and then offers a choice of light intensities and video resolutions.

Zoom mode aims to correct motion blur, though as with other modes, it’s best to hold your phone steady to avoid unexpected results. Hydra is designed for specialized circumstances as a complement to rather than a substitute for the built-in iPhone camera app, but it's great to have on hand for quiet, dark places.

Think you may end up printing low light photos from your trip? Hydra is worth having on hand.