The Effects tab sheet is meant for producing special effects. You can apply more than 40 effect settings, create a glow effect, four edge overlay effects and add grain to the image.
When you click on the arrow-down button a menu with four sub menu appears. The sub menus are named Art, Blur, Glow and Sharp. Each contains 10 or more effect presets. They do not only change the settings on the Effect tab sheet, they influence all controls of FocalBlade. In FocalBlade 1 they are available as preset files, now they are built into FocalBlade.
C1, C2, O1 and O2 Buttons
These four buttons overlay the image with the image edges known from the edge mask. Whereas the N and P buttons on the Mask tan sheet are meant for adjusting the edges mask, these options are as a means of achieving special effects. While one of them is activated, you can use the Glow slider to colorize the effect. The Edge Mask features on the Mask tab sheet can be used to adjust the effect in more detail.
The glow feature emphasizes the outlines of the image objects. Clicking the color box at the left of the Glow slider opens up a color dialog for selecting a color for the glow effect. The default color is white, because that allows color-neutral glow effects. Moving the knob of the Glow slider to the right creates a glow effect whereas movements in the opposite direction apply a black outline effect. If you select another color, e.g. red, negative values will use a cyan color, which is the opposite color of red in the color wheel.
Additionally the Edge Mask sliders on the Mask tab sheet can be used to adjust the glow effect: For example the Intensity slider intensifies the glow effect, the Width slider widens it, the Remove slider shrinks it and the Lightness slider brightens it a bit.
The grain options let you add a grain to the image. This can increase the perceived sharpness of the image or make a blur effect look more natural.
The Distribution combo box gives you the choice between three types of grain: Uniform, Gaussian and Laplacian. Uniform noise looks a bit flat and even, because it distributes itself equally over the image. Gaussian noise has a wild distribution pattern and laplacian noise additionally contains pure white and black dots. So gaussian and laplacian noise appear more like film grain whereas uniform noise looks more "digital". The Intensity slider controls the intensity of the noise. Use a lower value for it if you do not want the viewer to notice the noise at first sight.