Ghost Color & Lens Coatings

Ghost Color and Lens Coatings

Lens flare ghosts often exhibit distinctive colors that change depending on the angle and intensity of the incoming light. These color shifts are a natural byproduct of lens coatings, which are thin layers applied to lens surfaces to control reflections.

In real lenses, coatings influence which wavelengths of light are reflected or suppressed at each surface. As light bounces internally through the lens system, these interactions result in the characteristic tinted and iridescent colors commonly associated with lens flares.

Coating Thickness and Color Behavior

One of the most important parameters affecting ghost color is coating thickness.

Low coating thickness
Produces strong, saturated colors. Ghosts tend to appear bold and clearly tinted, often shifting noticeably as the light angle changes.
High coating thickness
Produces smoother color transitions, gradients, and evolving multi-color patterns. Ghosts may appear more complex and less uniformly tinted.

Because these effects depend on multiple internal reflections, the exact colors that appear are difficult to predict and this unpredictability closely matches real-world optical behavior.

Automatic Coating Tool

Manually adjusting coating thickness on every lens surface can be time-consuming. To speed up the process, Flares OFX provides an Automatic Coating tool.

This tool:

Applies coating thickness values automatically across lens surfaces
Introduces controlled variation using a Randomness parameter
Quickly generates believable and varied ghost coloration

By adjusting the randomness and base thickness values, you can explore a wide range of color responses with minimal setup.

Artistic Overrides

Because coating-driven colors are inherently unpredictable, Flares OFX allows you to apply per-ghost artistic controls after the fact.

Using these controls, you can:

Adjust an individual ghost’s color
Balance intensity after coating effects
Correct or exaggerate specific colors for artistic reasons

While these adjustments are not physically correct, they are intentionally provided to give artists full creative control over the final look.

Practical Workflow

A common workflow is:

Use the Automatic Coating tool to establish a physically inspired color base
Observe how ghost colors evolve with light angle and intensity
Apply per-ghost adjustments to refine or stylize the result

This approach combines physically motivated behavior with flexible artistic control, allowing you to achieve both realism and creative intent.