I found how to enable the new camera API for Vibe K6 , but have a bug, when i change the build.prop, the stock app from camera do not work well. you can do if you wanna try. All the manual controls will be available in the most of apps, in record mode too
Go to the build.prop and add this
" persist.camera.HAL3.enabled=1 "
save and restart the phone. that's it, you can try to install "manual camera" on google play to test it. some apps works well. If you guys found anything new, plz tell me.