kgarrison said:sergekouper said:Sorry, case not close !
The interferences we're talking here are not prop shadows, this interference is covering a bigger area than the props entering the top of the picture. They are directly related to the speed of your rotors, the position in the sun, determining the speed of your shutter, the whole thing creating this flickering effect. So apparently some have to redo their homework here.! :lol:
Nobody said it was the props entering the top of the picture. Bright light from above, such as the highly reflective clouds in his video, will create a strong overhead light source, the props will then cast shadows onto the lens. This effect can cover the entire field of view depending on the angle. This is what appears to be happening. I would bet if he flew in different lighting conditions, his results would be different.
Ok, let's keep away these props entering the picture,then it's clear for everybody. i have been working on this question and the answer is above. Installing a hood on the lens will not change anything. However, slowing down the rotors has an impact. You can achieve the same effect by installing a ND filter. This will slow down the speed of the shutter, and diminish/stop the problem. I do it, with results. I installed a tiffen 0.9, 37mm on a mount adapted to the GoPro. Now you can deny that as well if you like!