HDR Pro Camera HDR Pro Camera
the author of this app says:
HDR Pro Camera creates well-exposed full-resolution pictures captured with the phone's camera and from already stored pictures. Therefore two or three pictures with different exposures are stitched into one HDR image. Various parameters can be contolled such as saturation, brightness, contrast, details, picture alignment and others. The final image can be directly uploaded from HDR Pro Camera to Facebook, Flickr, Picasa, and Twitter.
Note: depending on the picture dimensions a lot of RAM is used for a short time. We recommend to use HDR Pro Camera only on devices with more than 256 MB of RAM.