Simulates a halo that is generated by the diffraction associated with the spread of a lens. This filter is typically applied to another image to simulate lens flares and similar effects.
Effect Parameters
Presets
Presets contain a snapshot of the plug-in parameters. The Presets control lets you choose among one of the presets built into the plug-in, save current parameter values to a preset file, or load an existing preset file from disk.
A preset file saved to disk via the "Save As" button can be loaded from another instance of the same plug-in by clicking the "Open" button. Presets generated in one host can also be loaded from the same plug-in when used in a different host.
Center
The center of the halo.
Color
The color of the halo.
Halo Overlap
The amount of overlap of each color frequency in the halo.
Halo Radius
The radius of the halo.
Halo Width
The width of the halo.
Striation Contrast
The contrast level of each striation in the halo.
Striation Strength
The intensity level of each striation in the halo.
Seed
Controls the location of the striations. Animate this parameter to add flicker to the halo.
Correct for Aspect Ratio
Scales the image to its natural display aspect ratio before the effect is applied. This parameter guarantees that geometric features in the effect appear undistorted when the footage is viewed at its display aspect ratio.
This parameter should be enabled for most footage whose display aspect ratio differs from the native aspect ratio of the codec, e.g. NTSC DV frames recorded at 720x480 pixels and displayed at 4:3 (640x480 pixels), or HDV frames recorded at 1440x1080 and displayed at 16:9 (1920x1080 pixels).
Disable this option if you have already taken steps to adjust the frame aspect ratio and/or notice that this parameter is causing unwanted distortion in your footage rather than preventing it.
High-precision Output
This parameter, available only inside Final Cut Pro, controls the color range of the final output. Although you will see no difference in the Canvas window (due to the fact that Final Cut Pro always previews in 8 bit color) high-precision clamping ensures that your output falls within a predictable range. This feature will often save you an extra post-processing step and come in handy when the only previewing device available is the built-in display.
Color Space
This parameter allows you to choose a working color space for the effect. When the “Linear” option is selected, the plug-in will convert all color values to a non-gamma-corrected format. When the “Uncorrected” option is selected, the color values supplied by the host will be used directly, without conversion. It may help to choose “Uncorrected” when dealing with smooth gradients or vector-art backgrounds, or if you have already applied gamma correction to your source media in a previous step of your workflow.