В©2018 justurbanism.com - 24 May 2015 Go to Wired Home Page. Molly McHugh Photo; Date of Publication: 05.24.15. According to a study out of Yahoo Labs, researchers looked at 7.6 million Flickr photos (many of which . They are, in descending order of popularity, no filter, Amaro, X-Pro II, Valencia, and Rise. Rodrigo Brasil de Mattos.