2) Open build.prop, make string 'persist.camera.HAL3.enabled=1' , save, reboot.
3) Check manual features by Manual Camera Compability utility.
4) Install FV-5, Manual Camera etc and enjoy by manual exposure,focus etc)
It's working on my xiaomi.eu latest MIUI7 and Mookee ROMs)
p.s. I have Snapdragon version, pls test on the MTK who have this devices.
Thanx to Nevio (4pda.ru) )))
BUG! Stock camera in MIUI7 crashed with this feature. MIUI8 is normal.