Are your images slightly blurred when people make movements? You issue is likely focus, lighting, or camera settings. Check you ISO, your Aperture, and your shutter speed.
First Check to make sure your camera is in focus, or set it to auto focus.
The camera’s ISO setting is its sensitivity to light. The higher the ISO, the more sensitive it is, exposing more light. A good starting point for a photo booth is an ISO of 400-800. Most new cameras will allow an ISO setting of up to 1600 before you begin to lose quality due to graininess.
Then check your aperture. The Aperture is a hole within the lens that controls light. The larger the hole, the more that light will pass to the camera sensor. As the hole gets smaller, your image will become darker and the depth of field will lessen causing more of your image to be in clean focus. Your aperture should be in the range of f7 to f10 to keep your image in focus.
Next check your shutter speed. Your shutter sped is the length of time a camera shutter is open to expose light into the camera sensor. It’s ideal to have your shutter speed above 1/60 to avoid motion blurs. If you are shooting with strobes or a flash, you will need to stay below 1/200, allowing your shutter to sync with your light source.
A good starting point is to set you camera to manual mode. (always, always, shoot in manual mode.)
Set your ISO to 800, your Aperture to f/8.0, and your shutter to 1/160. Take a test shot and adjust from there.