Graduated Blue Filter
The strength gradually decreases near the centre of the filter allowing emphasis of foregrounds or backgrounds.
Colour of lens gradually fades out, so the boundary between the coloured and transparent sections of lens will not become apparent even with the lens aperture stopped down.
This filter is mounted on rotating frame, so you will be able to rotate the colouring at any part of your image. Giving your landscape and skin texture a more colourful touch.