I'm using the Nikon D5300 for scientific video recording via HDMI (sending HMDI from the D5300 to an external recorder). I need to find a way to set the shutter speed the D5300 uses for video (or more accurately for its live view HDMI transmission), because I need to use a fast shutter speed to reduce motion blur. But I cannot use 'M' mode because I need some autoexposure capability to allow the camera to adjust to changes in lighting while placed in a location where I cannot access it to change exposure settings.
So I would like to use 'S' mode to fix the shutter speed while the camera autoexposes via ISO and/or aperture. However, when I'm using live view in 'S' mode, the camera seems to be actually using whatever shutter speed it wants (even though the one I set is shown on the display) -- I can change it from 1/30 to 1/4000 without any apparent changes in brightness, motion blurring, etc. So it's acting like it's in 'P' mode rather than 'S' mode.
So, does anyone know how can I get 'S' mode behavior for video?
So I would like to use 'S' mode to fix the shutter speed while the camera autoexposes via ISO and/or aperture. However, when I'm using live view in 'S' mode, the camera seems to be actually using whatever shutter speed it wants (even though the one I set is shown on the display) -- I can change it from 1/30 to 1/4000 without any apparent changes in brightness, motion blurring, etc. So it's acting like it's in 'P' mode rather than 'S' mode.
So, does anyone know how can I get 'S' mode behavior for video?