为什么我照照镜子好，但在照片不好？
====== Feature ======
Have you ever wondered why you look good in the mirror but bad in photos?
Because a reflection in the mirror is the lateral inversion of the original so what you see in the mirror is actually different from how other people will see you (it has been flipped). This app will flip the camera and show you how people see you.
Tips:
- This app is good if you want to makeup yourself directely from your cam.
Sources:
- https://www.quora.com/Why-do-I-look-good-in-the-mirror-but-bad-in-photos
- http://annawu.com/blog/2011/09/focal-length-comparison/
- https://en.wikipedia.org/wiki/Mirror_image