ND8 is suitable for cloudy days and ND16 for sunny days
Caddx ND filter
To remove Jello,Caddxfpv made a filter for Ratel and Turtle V2,Meanwhile, ND filter will make footage look very clean and clear.
This filter can be used on Turtle v2 (turbo eye---White print around the lens) ,Turtle V2(special lens) and Ratel(2.1mm lens)
But special lens doesn't work as well as turbo eye because the surface of special lens is not flat.