I am under the impression that you can run at 60fps and this would remove the prop? I currently have 128GB but may invest in 256GB memory as this will give me 60fps at 4K for 4 hours or so. Currently at 30fps and this doesn’t remove the prop.
I recommend reading back up this thread.
The only way to fully remove the prop is a proper shutter, which no normal action cam has, and run it at something like 1/80 sec.
ND filters just absorb a load of light so the image is captured over a longer time, because the action cams usually run in an auto exposure mode. They have a fixed F number so as you reduce the light they first stay open for longer and when that option runs out of steam they wind up the ISO (which makes image noise).
I shoot at 50 or 60fps and it does nothing for the prop. The only way with an action cam (a semi-pro camcorder is impractical, especially for external mounting) is to mount it so it doesn’t see the prop, which on an SEP means far out on the wing. Then you get real quality. The current action cams are good for image quality, even if most distort a lot (and need geometric corrections in editing).
Also shooting at 4K is a waste of time in most cases. I have a 256GB SD card in the X3000 and it runs for about 8hrs on 1920×1080 HD at 50mbps which is really high quality video. But then I am not doing lens correction, because the X3000 doesn’t need it.
Until we have global shutter cameras, this will always be something we’ll have to combat for propellers. Problem with making global shutter cameras is that they put enormous strain on processing power as they now have to capture every pixel at once, whereas todays cameras just captures a single row of pictures sequentially. There are a few global shutter cameras around, you can look for some off the smaller units from Blackmagic Design and Lumix (GX9) etc.
Indeed; global shutter cameras are discussed further up this thread.
Not sure about the CPU power reason… the data has still got to be shifted out of the sensor, at some given clock rate. I think the main reason the global shutter cameras need faster hardware is because their market is people shooting stuff like raw 8K video which is probably best part of a gigabit per second… and that has to be written to SSDs as it comes out.
There’s some great knowledge on this thread! With the timescale available, looks like an ND 8-12 on the GoPro might achieve reasonable results without the option of a wing mounting. Maybe Cinematic or Nflight…
Nflight certainly works well
