To use the ISO 50 manual setting in daylight currently requires a Neutral Density filter to reduce the amount of light entering the lens.
If faster shutter speeds were available then the ND filter would not be necessary, it seems like a reasonable request to me.
However a ND filter will probably give a better result since it will give you motion blur to smooth the movement between frames, the video should look smoother.
I don't actually think it is necessary to set ISO 50 for daylight use since the auto exposure will nearly always be using 50 or close to it anyway, so you will not see any improvement. I don't think the auto exposure ever goes above 400 until it is properly dark and I can't see much loss in quality between ISO 50 and ISO400.
people should be more educated on how to use shutter speed in video mode. You can t keep playing around with shutter speed as it will add bad special effect to the video and they will complain about the picture quality.
You whant
the same shutter speed as the fps for a dreamying effect
double shutter speed than the fps for a more natural look
triple shutter speed than the fps for special effect (stroboscopic video)
if you keep adding more shutter speed in the idea to reduce the ligth comming in , you do it wrong!!!
shutter speed in video mode is only use to get the video effect you like and for 95% it is at double the fps. This is not like in picture triangle of exposition even there is no triangle of exposition in video mode.
a good cinema camera can play with 2 options to reduce the ligth without affecting the video
film sensitivity or ISO
and neutral density filter add on
there is other way also to reduce the light but they all play with your image quality or perspective
aperture, but it will play with your depth of field(this one is fix in the gitup camera)
shutter speed but you can t really play with it . IT should alway stay at doule the fps. slower more ligth , faster less ligth
and the FPS , more FPS with the good shutter speed, reduce the ligth exposure. ( usualy , 24 fps for film look, 30 fps for more natural look and 60 fps for doing slow motion or fast panning or fast action .