The best alternatives to Camera Noir are Show & Hide, Argentum Camera, and Fotr. If these 3 options don't work for you, we've listed a few more alternatives below.
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Proseezion is for photographers that care about image quality. It has an innovative image stacking technology that allows adjustable real dynamic range and exposure, while having almost no noise even in extremely low light conditions. Details and color are also enhanced with manual focus for precision clarity. Requires a tripod to amaze you.