Ideally, a hydrogen fuel-cell vehicle has no environmental impact. Energy is produced by combining hydrogen with oxygen pulled from the atmosphere, and the tailpipe emission is water. The hydrogen fuel could come from a number of sources (Iceland recently started pulling it out of the ground).
A fast shutter speed such as 1/400th of a second will produce a series of crisp frames that have a choppy look when played back. A slow shutter speed such as 1/30th of a second, on the other hand, will produce a series of slightly blurred frames that have a smoother look when played back.
When you shoot in â Aperture Priority â mode, you set the lens aperture, while the camera automatically sets the shutter speed. There are two ways to manually set the shutter speed: a) By setting the camera to â Shutter Priority â mode, where you set the shutter speed and the camera automatically selects the aperture. b) By setting the camera to â Manual â mode, where you set both shutter speed and aperture manually.