Stock Samsung camera app focus issue

Hi. I have an international version of galaxy s3.
I was using an aosp kitkat based ROM but, like every aosp ROM, it has camera focus bug. So I installed echoe ROM 4.3 after cleaned sdcard, cache, dalvik, system, preload and data.
After installed the new ROM I tried the camera and the focus bug is still there.
So I tried to restore an old cwm backup of a 4.3 sammy ROM but, again, the bug is still there.
What's happening? How Can I fix this?

Edit:
I tried other camera app: google camera, snap camera and camera zoom FX and focus bug seems to appear only with Samsung stock camera app.
Maybe somes libs is missing? Who Can give me a flashable zip with Samsung camera libs?

Thanks in advance

Help.