By Peter Libbey and Jason Farago: “Here’s the good news: You now have a sharper camera in your pocket than professional photographers could dream of 30 years ago. Here’s the bad news: You can only shoot from your apartment.… But sprinkled among Instagram’s more than 1 billion users, you’ll also find some of the world’s greatest fine art photographers — some shooting on iPhones or Android handsets, some relying on digital cameras and uploading manually. Against the mandatory confinement imposed from Argentina to Zimbabwe, these photographers have taken to the platform with newfound vigor, plunging their imagery into the swim of the social feed.”