Have you tried taking the same photo with a fully wide open and a fully closed down aperture?
If it’s small & distinct wide open and becomes larger stopped down it might be something wrong with the very centre of the outside element of the lens.
Have you cleaned it yet with a drop of lens cleaning fluid on lens cleaning tissue? That might clear it up, or, show there is something going on, such as an area where the lens coating has been somehow removed or reduced?
If it’s small & distinct wide open and becomes larger stopped down it might be something wrong with the very centre of the outside element of the lens.
Have you cleaned it yet with a drop of lens cleaning fluid on lens cleaning tissue? That might clear it up, or, show there is something going on, such as an area where the lens coating has been somehow removed or reduced?