HDRI Firefly

[3form]

Hi

Keep getting extreme firefly in mky scene from HDRI enviroment. Any ideas why, light is strong etc.

[petergazo]

It is probably caused by strong sunlight from behind camera, let it cook longer and fireflies will start to disappear. Cechk this tutorial http://render.otoy.com/forum/viewtopic.php?f=21&t=878. And try to use set hotpixel_removal value between 0.4-0.75. 200samples/pixel is too few, you will need thousands before image is clear.

[Refracty]

you could modify the hdri and remove or blur the "hotspot"

[3form]

Thanks for the info, I am clamping the white in 3dsmax HDRI importer looks like its working ok.

[gueoct]

i ran into the same problem;
then i used a Color Correction Texture, keeping the HDR as a sub-map
and the rendering lost it´s graininess completely, leading to a much faster result... try it!

[3form]

Thanks will try that

[3form]

Thanks will try that

Works like a pimp thanks!!!!!!!