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Some camera have more shutter speed ,some are less.How it will effect Or use of that in photography.Which one considered as best
Shutter speed affects several things...
The shutter speed you choose will depend on the subject and the effect you want to produce. You may want a slow shutter speed for velvety flowing water, or you may want a fast shutter speed for stopping the motion of motorcycle racers.
The key is not to think that there is an absolute 'best' shutter speed (or aperture) but to try to visualize what effect a particular shutter speed will have on a particular subject to create the effect you want.