Android - Can I manually focus the camera on my Android phone?
I couldn't find a way to do it or an app that would do it. There were a couple out there that claimed to have manual focus but basically just did what you described as "assisted auto focus."
I found this thread at XDA where some people have been looking through the code to find a way to add the manual focus. From what they found it appears that it is possible but someone has to code it. Its worth keeping an eye on it: http://forum.xda-developers.com/showthread.php?t=630989
The new API for full control of the camera on android had been added to android version 5. Google added these features like iso ,manual focus and etc in android lollipop. I personally think to use this new API the camera hardware must support this features, However I didn't find any reference to claim this, but it makes sense to me that a hardware must be able to do such stuff.
you can use this app to check Manual Camera Compatibility.
There is a free android app that allows you to manually adjust focus (and more camera technical stuff for photographers) Its called open camera and can be found on playstore. (the one by mark harman) NOTE: it will only work if your device supports it. (aka if possible)
To get straight to using manual focous: install, open settings, near bottom of page turn "use camera2 API" on, then in camera mode (ready to take picture) click the "..." on the right side pannel, on the second row down of icons click the "m" (just above the "photo mode" words) (make sure your scolled to top, you can scroll down in that menu) It will then popup 'focus manual' and on the left side there is a big slider (above the zoom slider), you can drag that to manually focus your camera.
- someone who has had this app for a while. Your welcome.