Applying a Single Filter
1 Click on the Film Lab category in the Filters window and select the Looks filter.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/single_filter_filters.jpg)
Presets for the filter are generated in the Presets window and the default preset is applied to the image in the Viewer.
Note: Some filters have multiple preset groups for more convenient organization.
2 In the Presets window, choose a new preset group from the pop-up menu to see a different set of filter presets.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/presets_popup-tut.jpg)
3 Click on the different presets to try them out.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/single_filter_presets.jpg)
The image in the Viewer is updated as each preset is clicked.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/single_filter_viewer.jpg)
4 Adjust the parameters to your liking.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/parameters_halo.jpg)
Adjusting the parameters will update and change the image in the Viewer. You can also set the opacity of the filter using the Layer Opacity control in the Layers window.
5 Drag left or right on Layer Opacity’s numeric field to adjust the value.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/Tutorials.05.03.6.jpg)
In addition to opacity, Layers can be combined with the layer below using a variety of Blend modes.
![](https://borisfx-com-res.cloudinary.com/image/upload/v1701720928/documentation-optics/optics-2024/layer_blend_mode_popup.jpg)
Go to
Blend Modes for explanations of the various modes.