Selecting the foreground area (area to be remaining as sharp) is the key factor to get the best possible result. The selection tool in this app was designed and developed to meet your detail-oriented editing needs. It will display a loupe (magnifying glass) when you zoom-in and try to select/deselect area. The loupe is very handy because otherwise you can't see the spot you're touching as your finger is blocking your view. You can also adjust bokeh level (aperture) to control how much your photo's background should be bokeh-blurred. Here are the reasons why you should get Bokeh Lens today: - Great result with bokeh-blurred background - Easy to use - Awesome selection tool - Delightful experience Please enjoy the experience and don't hesitate to share your bokelicious photos! Result image samples can be found in our Flickr group. Please join our Flickr group: http://www.flickr.com/groups/bokehliciousapp and follow us on Twitter: http://twitter.com/BokehLens Use hashtag #bokehlens when you share your photos, and give us your feedback at: http://bokehlens.uservoice.com