IOS – change the default camera app on the iPhone

Your going to have to change some sort of index file that the iPad uses to keep track of what photos are in the camera roll. The file is probably in some sort of proprietary Apple format, the details of which are not available to the public. You might look in to the format of the file that controls the music library, which is also not public but the details are available around the internet thanks to persistant hackers. I bet the Photos file format is similar, with Albums swapped out for Playlists. But I'm mostly guessing.

Good Luck!

You are correct. This is because it is switching from the Camera app to the Photos app. People have been a little annoyed with this for a long time, but I suppose the separation is logical.

To get back to the camera you can either:

1. Double tap the home button and swipe from right to left and then tap the camera app, or
2. Swipe up from the bottom of the screen and tap the camera icon in the Control Center.