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.
1 Camera shake is when your camera is moving while the shutter is open and results in blur in your photos. 2  If youâre using a slow shutter speed (anything slower than 1/60) you will need to either use a tripod or some some type of image stabilization (more and more cameras are coming with this built in). Shutter speed is measured in seconds â or in most cases fractions of seconds. 2  The bigger the denominator the faster the speed (ie 1/1000 is much faster than 1/30). 3  In most cases youâll probably be using shutter speeds of 1/60th of a second or faster.