The general rule of thumb for figuring out the lowest handheld shutter speed that will produce a sharp image is to match the shutter speed with your lens focal length.
Shutter speed is measured in seconds or fractions of a second. The general rule of thumb for figuring out the lowest handheld shutter speed that will produce a sharp image is to match the shutter speed with your lens focal length. For example, if you have a 250mm lens, you want to shoot no slower than 1/250th of a second while handholding the camera. Remember that the focal length is standard for a full frame camera, so you need to adapt this calculation for your camera. A 250mm lens on an APS-C is equivalent to 375mm (so no slower than 1/375s) and on a MFT it’s equivalent to 500mm (so no slower than 1/500s).