The filter is processed accurately and sits securely and unobtrusively on the camera.
Reason for the acquisition was that you so well once can walk around without the protection cap with the camera, and does not have to worry that every drop or every grain of sand leads directly to the line, which is not as easy to clean as this filter glass.
Influences on the image quality are of course not visible, the remuneration of glasses is as high as that of the lens in the camera.
