What is the glowing orb over the focus bar?

What is the glowing orb over the focus bar? - Neon Lights Signage on Glass Window

I might have missed the particular tutorial.

What is the significance of the glowing blue-white orb of light over the focus bar?

middle-earth-shadow-of-mordor

Pictures about "What is the glowing orb over the focus bar?"

What is the glowing orb over the focus bar? - Red Oh La La Light

What is the glowing orb over the focus bar? - Defocused Image of Lights

What is the glowing orb over the focus bar? - Gold Glitter Lot

Light Painting Photography Tutorial: Orb Techniques

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Inga Seliverstova, NOHK, Miguel Á. Padriñán, Achira22