Adaptivity (adaptive image sampling) ensures a uniform noise level across your entire render. By intelligently redistributing computing power to the most complex areas - such as deep shadows or sharp glossy reflections - it prevents the common issue where some parts of an image remain grainy while others are already clean. When combined with denoising (3ds Max | C4D), this feature significantly accelerates render times, delivering a high-quality, polished result much faster.
How to use adaptivity?
Adaptivity is always enabled by default and does not feature any user-adjustable parameters.
Examples
1. Strong depth of field (3ds Max | C4D). Note that while some parts of the image are less noisy with adaptivity off, the overall noise is more uniform with adaptivity on.
1.1. Strong DOF - adaptivity on - 5 minutes.
2.1. Interior scene - adaptivity on - 5 minutes.
2.2. Interior scene - adaptivity off - 5 minutes.
3. Adaptivity and denoising (3ds Max | C4D)
3.1. Path tracing caustics - adaptivity on, denoising on - 10 minutes.
3.2. Path tracing caustics - adaptivity off, denoising on - 10 minutes.