Categories iPhone 4 Photography The Grid – A Detectable Warning Surface Post author By Scott Loftesness Post date May 1, 2011 No Comments on The Grid – A Detectable Warning Surface The Grid – A Detectable Warning Surface, a photo by Scott Loftesness on Flickr. From a photo taken with my iPhone 4 while walking back from Sharon Park – then post-processed in Silver Efex 2 just for fun! (Testing posting to blog from Flickr sharing button…) Share this:TwitterFacebookEmailLike Loading... Related ← Photowalking Stanford with Doug Kaye → Flying a Kite! You must log in to post a comment.This site uses Akismet to reduce spam. Learn how your comment data is processed.