go to the application folder and launch the Photon Pro app.
2.
When the splash screen opens, click on the 'Install' button. When prompted for a folder, leave the default choice (the user 'Movies' folder) and click 'Save'. This will install Photon Pro in the folder where Final Cut Pro X can find the effect.
3.
Once the installation is done, restart Final Cut Pro X if you had it running.
This will reload the effect list from the disk. You can now close the Photon Pro app.
4.
If you browse the available effects, you should now see
'Photon Pro Noise Reduction' under the 'FPGArts.com' category. Drag it onto your clip to see it in action.
5.
Now in the inspector you can see the Photon Pro effect panel,
where you can adjust all the parameters for your noise reduction.