I've just updated to the new Fly App 1.4.0 (Android) where DJI have clearly been tinkering with the UI for camera settings. When filming video I used to use 'auto' mode but adjust the EV value and then lock it to get the right exposure. A 'semi manual' solution if you like. I also had 'lock EV' set to the function button. However, unless I've missed it, the only way you seem to be able to lock settings now is to use full manual controls. Even though you can adjust the EV in auto mode, it doesn't stay locked and the function button no longer locks it either. Anyone found a solution? Bit frustrating as I liked this feature. Hopefully just a glitch that will get fixed, as the option to customise the function button with 'lock EV' still exists within the app.