Facebook's $715 million acquisition of photo manipulation app Instagram in April caused a fury among app developers specializing in photo apps. A month later, Facebook scooped up the development team behind Lightbox, another photo editing app that allows Android devices users to take and share photos across multiple social media platforms. And Google (NASDAQ:GOOG), in an effort to differentiate itself, recently acquired Nik Software, which makes the iOS photo sharing application Snapseed. While Instagram still commands the lion's share of the mobile photo market, is there room for new apps that capitalize on aspects of the photo app ecosystem that are either underserved or don't yet exist? Find out in this FierceMobileContent special report.