You can change focus far by an up flick and near by a down flick. - When tap a camera view, it adjusts the exposure to the position where you tapped. (When it is too bright, tap a bright part and it becomes the appropriate exposure. When it is too dark, tap a dark part.) - It can turn on a blowtorch. (blowtorch button) - It can sharpen a preview video image (sharp button) - It can emphasize the objects which are in focus with cross hatches on a preview video image. (edge detection button) - It can list photographs and comments that are stored. - It stops a preview when the handset is standstill state for about ten seconds. It reopens a preview when you move the handset. This app includes the following open sources.・openCV(Copyright (C) 2000-2015, Intel Corporation, all rights reserved.; Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.; Copyright (C) 2009-2015, NVIDIA Corporation, all rights reserved.; Copyright (C) 2010-2013, Advanced Micro Devices, Inc., all rights reserved.; Copyright (C) 2015, OpenCV Foundation, all rights reserved.; Copyright (C) 2015, Itseez Inc., all rights reserved.) ・GPUImage(Copyright (c) 2012, Brad Larson, Ben Cochran, Hugues Lismonde, Keitaroh Kobayashi, Alaric Cole, Matthew Clark, Jacob Gundersen, Chris Williams. All rights reserved.) ***