500px users will be happy to hear that the photo-sharing service has updated its iOS client today, bringing the app to version 2.5. The update only includes one feature, but it's a huge one: you can now use the mobile app to upload photos.
Up until now, you could only upload photos to 500px via the web—a major gripe with current users and big barrier-to-entry for potential users in an Instagram-era where most people take, edit and upload photos on their mobile devices...