So I tested the pinky corner removal using overlay for my 4.4mm

[SPP]

Guys,

If you want to try other alternative before pulling a trigger on a Peau US$50 special firmware/software, this is worth testing.

I tried this guy advice :
4.35mm Lens Mod for GoPro Hero 4

And I used it on Vegas Pro 13, it looks decently good result to me.
I zoomed to 200-300% and I do not see resolution loss, I mean I thought overlay will produce some sort
of resolution reduction.

NOTE : I am only familiar with Vegas Pro but I am a video editor dummy .
So dont ask me how to do it using other editor.

Here is how I do it : Use OVERLAY mode, the guy below call it BLEND mode.

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Result.............

.



Have fun....