Hi! I was wondering if there is any third-party camera with a persistent background process that keep the camera loaded in memory, like the official roms of some manufacturer does (LG/Motorola, maybe others). So, when you click the camera icon, the camera open instantly. It will be great for CM roms or other roms that don't have that background service on stock camera. And if the purpose of the service is only keep the camera on memory, without triggering wakelocks/alarms it shouldn't have an impact on battery life. The only impact will be on available ram but generally it's not an issue on newer devices or when using non-official roms where you can freeze the unused apps.
Thanks! And sorry for my bad english