Adobe Lightroom CC has a nifty tool that is especially helpful to underwater photographers. To help you get acquainted with it, have a look at this video tutorial. Although this tutorial covers how to use the Dehaze tool to make global adjustments, you can also access it to make local adjustments!
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There is some underwater imagery that is truly exceptional and the work of Diana Fernie rates high on the scale.
At the end of a long day of unproductive diving,[...]