Thanks for the prompt, @Laura Foulds Moody on adding Lens Flare effects. Here's another way to go about that:
- Open an image in Photoshop.
- From the Layers panel, right-click on the Background image and select “Duplicate Layer...” and rename the layer if you like.
- Right-click on the Duplicate Layer and choose “Convert to Smart Object” for non-destructive editing. This also allows you later to reposition the Lens Flare if needed.
- From the top menu, select Filter > Render > Lens Flare.
- In the Lens Flare dialog box, select the Lens Type and Brightness level. Use your mouse to adjust the position of the Flare in the preview window. Click OK when done.
- To soften or remove areas of the Flare effect, select the Layer Mask on the Smart Filter layer.
- With a large, soft brush, set with an Opacity of around 33% to start (depending on your image and desired outcome), paint on the Layer Mask with black. If you go too far, switch to white and re-brush over the area.
Before:
After: