if you switch to manual mode you can then change the shutter speed by spinning the little dial to the right of view screen. sorry for not knowing the technical name of the little wheel i just know what it does. the camera will let you choose a shutter speed up to 30 seconds long or you can spin the knob until its in bulb mode. haven't used bulb yet so not sure how that works. hope this is what you were asking, i am pretty new here so again i don't know all the technical jargon i just experiment a lot.