What does shutter speed mean? What does B shutter mean?

Shutter speed represents the length of exposure time. The more abundant the light, the shorter the exposure time required. When the light is insufficient, the longer the exposure time is required. In a long exposure, it requires Pay attention to the problem of hand shake. Usually long exposures require a tripod to stabilize the camera so that the picture does not produce shaking afterimages.

The B (Bulb) shutter controls the length of time the shutter is open. When you press the shutter button, the shutter opens. It will not close until you release your hand. When using the B shutter, it is usually used with a shutter release cable.