Currently the ND 8 filter is available for the Caddx Turtle V2 with the plastic lens and the Caddx Ratel, but there are more to come. On the Caddx facebook site they state that there will be different strengths of the ND filter and a version for the Turtle with the glass lens.
Jello or the “rolling shutter effect” occurs with, as the name suggests, cameras that have a rolling shutter. Cameras with a global shutter on the other hand, take a snapshot of an entire scene at a single instant time.
The HD cameras we use in FPV all have a rolling shutter where a scene is captured in horizontal lines, one line after the other. Especially when fast movement is involved it might happen that the quad already moved a bit and the next scanned line is thus offset from the previous one and the result is jello.
An ND filter basically reduces the amount of light entering the lens, thus decreasing the shutter speed, which on the other hand will introduce motion blur. So you basically trade motion blur against jello - a trade off I would take anytime, at least in FPV.
Albert Kim has released a flight video with the ND filter on the Turtle - pretty impressive, basically Jello free. This could be interesting for everyone with a Mobula7 HD, Tiny Leader, Beta 85x HD or any other brushless whoop with the Caddx Turtle V2 on board