Apple added HDR imaging with iOS 4.1, but it’s limited to iPhone 4 only. If you’re not familiar with the process of HDR imaging, the overall concept is really pretty simple. HDR (high dynamic range) is a techniques that allow a greater dynamic range of luminances between the lightest and darkest areas of an image than standard digital imaging techniques or photographic methods. HDR Imaging automatically combines multiple exposures into a single HDR image.
Here we got reason #346253 to jailbreak your iPhone. Cdevwill, who you probably know because of the PDF Loading Warner patch, just announced that he made a tweak that will bring HDR photos to iPhone 3G and 3Gs running on iOS 4.1.
We are still doubtful on the success of HDR Imaging with iPhone 3G and 3GS. iPhone 4 with its Apple A4 chipset and 512MB of RAM certainly takes photos much faster than iPhone 3GS / 3G. There are HDR apps that work on older iPhones, though not in the same, speedy, integrated way as the built in iOS 4.1 version.
Anyways something is better than nothing so lets wait and watch for the Cydia release of HDR tweak for iPhone 3G and 3GS.