Instead, they are evaluated in a separate process that allows us to have more artistic control over factors that determine the final appearance of the effect physical characteristics such as diffraction, environmental circumstances, camera lens aberrations, and distortion. These effects are never calculated during the ray tracing process by the render engine. The main factor in bloom and glare is diffraction, which refers to the way light waves are split apart when they pass through an aperture, such as a lens or even the pupil of an eye. By adding these effects, we can subtly draw attention to light sources and add photorealism to our renders. ![]() ![]() In case you're wondering, bloom refers to the soft glow around light sources that can affect the overall image, whereas glare refers to the star-like rays that extend from a light source. When we look at these renders, we may not notice the light source - and this is where bloom and glare effects come in. Light sources in V-Ray scenes can often appear blown-out, as very white areas and bright pixels. In this article, I’ll guide you through what the lens effects do and how you can tweak them to your liking. After many years of research, and observation and analysis of the real world, these effects take into account the design of a camera lens to perfectly simulate bloom and glare, the naturally occurring aberrations that surround light sources. V-Ray for Rhino’s twin-engine rendering architecture can take full advantage of the latest CPU or GPU hardware. With new quick render presets and intuitive controls, you can focus on design, not the technical details. The Lens Effects tool in the V-Ray Frame Buffer (VFB) can be the difference between a good render and a great one. V-Ray 3 is built to be the smartest and fastest renderer for Rhino. Expert Ricardo Ortiz explains how they work and how to use them. ![]() The V-Ray Frame Buffer’s bloom and glare Lens Effects are the unsung heroes of great renders.
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