In an imaging app I'm working on, I want to enable the user to apply a blur filter to the image. Bit creating an icon for that filter isn't easy. Should I
- Draw a white circle and just apply a blur to that and take that image as icon? I'm not too happy with making a modern UI icon that hasn't straight lines and curves, but blurry outsides
- Similar to 1., but make one half of the circle without blur and separate them with a line (similar to an average sign
- Make a circle / image with an very curved, unclear outline, but all of the image in the same color (white) so I don't have to apply a blur to the image itself which seems like violating the modern UI design princibles
Any help (or reference to some documentation) is appreciated.