The photo can be used for commercial purposes.
Are you feeling cold? Try to look at this lensball for a moment. This photo was created by a warm fireplace one winter evening. Thanks to taking this picture, the cold hands of photographer got warm really fast.
We recommend using a shallow depth of field and manual focus to get the best possible result. The reason for it is that while using the function of autofocus, most cameras do not focus on the center of the ball and the image is blurred.