Flashes are important for the trendy photographers but the need to identify the right flash to use remains. Though we are in the age of digital photography where people can simply use available software like Adobe Photoshop, the NYU researchers seem to have stumbled upon something better. They call it the Invisible Flash.

The said invisible flash is a flash that uses light is outside the visible spectrum, which is hence invisible to us. The camera takes a picture with IR and UV light which produces a monochrome image. A second image is taken without any flash, using only ambient lighting.

The magic happens when the software combines both images using the first monochrome picture as a reference point to de-noise the image with natural colors. Once combined, the result is nearly indistinguishable from a long-exposure shot.

The beauty of it all is that you don’t need special equipment to make it work. Any standard camera can do the trick and perhaps the most important thing is taking shots in succession to make sure that this will work.

(Source) Oh Gizmo

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