focus

Hello everybody, I’m new here and recently repaired my Spark after it landed in the sea. I replaced the front sensor and the gimbal. Now everything is find and working again, except the photos. Its alsways looks like there is the wrong focus. If I take pic 10-15cm away, it looks find, but the...

$500USD for these bad boys, and I have to return them because they don't have the ability to focus. I am just gobsmacked. I have excellent vision; I don't wear prescription glasses, though I do need reading glasses, (I am 58 years old). I am not a satisfied customer. I don't know enough...