Camera app with manual shutter speed

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http://forum.xda-developers.com – Are there any apps for the GS3 that allow you to manually control the shutter speed and ISO independently? I have tried Camera FV-5 which only allows going to "long+" which ends up somewhere between 1/30 and 1/17, at higher shutter speeds it drops resolution to 1080P. I also tried procapture, which only has an exposure compensation function but does not allow you to manually select shutter speeds. Neither of the above have a working exposure compensation on the gs3, it was capped out to +-.7, if you scrolled past that to say -2 EV it would revert to 0 EV for the photo. Is th (HowTos)