We are sure most of you don’t need reminding, but if your shutter speed is not fast enough when shooting handheld, the resulting images will suffer from the effects of camera shake. When this occurs, there will be all-over blur with no sharp areas in the image. As a general rule, the speed you use should be at least as fast as the focal length (or effective focal length) of the lens. So, if you are hand-holding a lens with an effective or actual focal length of 200mm, you will need to employ a shutter speed of at least 1ƒ/250sec to avoid blur. A lens with VR or IS should enable you to achieve good results with speeds 2-3 stops slower. However, if this does not appear to be the case your lens may require attention from our service department.