Now in its third year, the photography competition — run through Youth4Job's digital platform NotJustArt with help from U.N. India and UNESCO — received 320 entries from 14 countries.

Along with the enhanced speed and user interface makeover, the iOS version of the app also includes a new tool. The perspective tool allows users to correct skewed lines. For example, wide angle ...

However, horizontal lines become curved, but users can minimise such apparent distortion. There is no way to make flat wide-angle images completely distortion-free, says Sharpless.

Now in its third year, the photography competition — run through Youth4Job's digital platform NotJustArt with help from U.N. India and UNESCO — received 320 entries from 14 countries.