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).
4) Fast, Slow and Long Shutter Speeds. Fast shutter speed is typically whatever it takes to freeze action. For me, it is typically above 1/500th of a second for general photography and above 1/1000th of a second for bird photography. NIKON D700 @ 420mm, ISO 450, 1/2000, f/5.6.
4. Use the Shutter Speed Priority Mode. Motion blur is all about shutter speed. To bring out the motion in the backdrop and keep the subject in focus, start with a shutter speed of 1/200th of a second and slow down gradually depending on the results and the speed of the subject.This will help you to determine the optimum shutter speed for motion blur in those conditions.o bring out the motion in the backdrop and keep the subject in focus, start with a shutter speed of 1/200th of a second and slow down gradually depending on the results and the speed of the subject. This will help you to determine the optimum shutter speed for motion blur in those conditions.