HDR (High Dynamic Range Imaging) is one of the hot topics for professional and amateur photographers. Naturally, the question arose: Can you do HDR photography on the iPhone?
In short, HDR is a process where you combine in software multiple exposures of the same subject that were all taken at different exposure levels. The combined images provide you with a higher dynamic luminance range than a single image would do, thus allowing you to better showcase details in the photograph as long as you do not exaggerate such details. See Wikipedia for a full description.
The iPhone is not conducive to HDR photography. Even if you brace your iPhone so you could photograph the exact same subject multiple times, the iPhone does not allow you to set the exposure of each images, which is critical to the HDR process. And while I can imagine the iPhone to be able to combine multiple images (align and process), I cannot see it to perform tone-mapping well, since that process requires too much processing power, at least for the current generation of iPhones.
HDR Camera app gives the image an exaggerated look
So when I searched iTunes for HDR apps recently, I was surprised to find a few. Upon further checking, these applications basically consist of filters that make an iPhone image look like it was processed as an HDR image. Unfortunately, they highlight the exaggerated HDR look, thus making the images look fake and over-processed. But if you are into that look, you might check out these apps:
HDR Camera: $2.99 in iTunes
PhotoPict: $1.99 in iTunes
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