In the video below, uploaded Feb 2012, Mark from HDHat.com demos use of ProCamera app for capturing video. While ProCamera can do much more than the demo illustrates, Mark does a nice job of showing ProCamera’s easy adjustment of focus, saturation, brightness and ProCamera’s video zoom capabilities.
ProCamera + HDR – Turn your iPhone into a powerful digital camera
ProCamera + HDR is an iOS photo, video, selfie and editing app bursting with state-of-the-art technology!
