[FEATURE REQUEST] Manual focus

[UlyssesZh]

Is your feature request related to a problem? Please describe.
80% of the time, my camera's auto focus just cannot find the best focus.

Describe the solution you'd like
Using the manual focus feature of Camera2 API. Adding a slider in the picture taking UI to adjust focus manually.

Describe alternatives you've considered

Additional context
https://developer.android.com/reference/android/hardware/camera2/CaptureRequest#LENS_FOCUS_DISTANCE

[farfromrefug]

@UlyssesZh you should already be able to manually focus at any point using a tap on the camera view. Doesn't it work for you?

[UlyssesZh]

It's auto focus, and not smart enough for me.

[farfromrefug]

@UlyssesZh ok i understand. Do you an example of an app doing that (to get UX design idea)? I also need to see if the same thing can be done on iOS

[UlyssesZh]

Open Camera has manual focus feature. The UX is a vertical slider at the left side of the camera preview, and there is a number on screen showing the current focus length when the slider is operated.

The same thing may be impossible on iOS, but I am not familiar with iOS app development, so I cannot help with that.

It may be impossible on Android for some phone models, too, because the support of Camera2 API varies among different phone models.

[farfromrefug]

@UlyssesZh i dont see it with Open Camera on my phone. On the left side i do have a slider but it is for the zoom.
Did you enable something in the settings? Might be device dependent

[UlyssesZh]

Select the three dots on the top, and select "MF".

[farfromrefug]

@UlyssesZh great I see it now. Will implement this. However might not come before September :s will be out of computer for 6months so I ll only do small bug fixes from my tablet

[UlyssesZh]

That's fine. I'm grateful for your work.