FAQ

In a poorly lit environment, the frame rate (shutter speed) drops to allow
for a longer exposure time. The downside of this is that any movement
in the frame, or of the hand holding the camera, can result in greater
blur. Furthermore, the camera sensor will soften the edges in low light
to counteract the darkness by reducing the image noise. This too can
sometimes result in a blurred picture. Try to improve the lighting to get
better results.