Long shutters great tripod camera support , good need record scene subject moving.Image stabilisation ( IS ) Modern image-stabilisation systems really remarkable , shifting sensor keep movements camera others using group elements lens.These systems allow us handhold camera much longer shutter speeds would usually case.As long shutter speeds though moving subjects blurred even best IS system.High ISO To achieve short enough shutter speed moving subjects , high ISO setting might desirable.Many cameras offer high ISO settings manage noise produced dramatic amplification well others.However well noise managed , high ISO speeds deliver lower overall image quality.Wide apertures Using lens wide aperture makes life whole lot easier comes shooting low light.When use lens lets light focusing easier , ’ need high ISO settings long shutter speeds quite much .