This add-on will allow you to generate professional looking lens flares and composite them into your renders. There’s really nothing else like it for Blender, mainly because it’s so challenging to create. It’s essentially a full simulation software inside Blender.
It works with Blender 4.2 version.
Here is an example of what it can do:
It has bunch of available lenses:
You can change camera settings as well as lens system settings like coating size for colourful effects:
Some more examples: