This check-up is done on single or grouped pixels. Group Pixels: Adaptive Sampling works by testing the quality of image pixels against a pre-defined noise threshold. The default of 256 is something you should be able to live with for most scenes. samples way down may compromise the quality of the GI solution. Though this may sound tempting, taking the min. Lowering this number will allow the adaptive technique to start affecting the image sooner thus reducing render times. You can imagine this as a mandatory layer of processed pixels, which is there to ensure you have a good base to build on top of. Samples: That’s the amount of samples that will be rendered before adaptivity kicks in. For the the remaining 40%, pixels will render without taking adaptivity into consideration. A setting like, let’s say 0.6 means adaptive sampling (with respect to the noise threshold) will be applied only 60% of the time. Probably 99% of the time you’d want it at the default 1. This parameter controls how much adaptivity is applied when sampling the image. I have it in writing!”Īdaptive Strength: Self-explanatory.

what I’d perceive as “a clean pixel” will most certainly translate to you as “wtf is this noisy mess!?” But cheer up – I will, at least, render faster! That’s pretty much it. On the other hand – with a noise threshold of 1, my ability to judge what’s noisy and what’s clean will be compromised. In reality, this will render adaptivity useless thus returning the control over image quality, back to “max. This means I will be forced to throw equal amount of samples in all areas of the image, at all times. “Sure, I can do that! A word of caution though – consider, with noise threshold of 0 there is no longer a noise target for me to test against. “Dear Octane Render, if the noise level of a pixel reaches the defined threshold value, please consider this pixel “clean” and stop sending additional samples in that area.”

Let’s assume you go with the default of 0.03. What follows below are just some of the thoughts that should be running through your head when adjusting this setting. Noise Threshold: This is probably the most important parameter when rendering with Adaptive Sampling.

If your whole image is equally noisy, this feature will not help. It is mostly useful is in scenes that have areas that are a lot more noisy than others. samples quite high and then rely on the adaptive sampling to figure out which pixels actually need that many samples and which don’t. Adaptive Sampling with Octane Render for Cinema 4D An excerpt from “What’s New in Octane Render v3.x”Īdaptive Sampling is a rendering technique that disables sampling for pixels that have reached a specified noise threshold.

Clean render cinema 4d