Help with Pixel problem

beachlegs

A few times I have finished a render only to find I have dots all over my lady, How do I get rid of these please?

 

 

Richard Haseltine

That's noise - the render needed to run for longer/with a higher convergence threshold/with the denoiser on (if the render is fitting into the GPU memory - it isn't available when rendering with CPU), or you need to add lights to directly affect the shadowed areas 9then adjust Tone Mapping to get the desired look)

beachlegs

Richard Haseltine said:

That's noise - the render needed to run for longer/with a higher convergence threshold/with the denoiser on (if the render is fitting into the GPU memory - it isn't available when rendering with CPU), or you need to add lights to directly affect the shadowed areas 9then adjust Tone Mapping to get the desired look)

Thank you I will go have a play now...Noise not dots noted lol

Spacious

Here's a link to a nice GUI for both the intel and nvidia denoisers.  You can run anything though it - renders, photos, whatever you want.  It was put together by a  DAZ forum menber.

https://taosoft.dk/software/freeware/dnden/

 

beachlegs

Spacious said:

Here's a link to a nice GUI for both the intel and nvidia denoisers.  You can run anything though it - renders, photos, whatever you want.  It was put together by a  DAZ forum menber.

https://taosoft.dk/software/freeware/dnden/

Thank you Spacious, I will have a look of that.

 

Richard Haseltine

Well, they are dots - but their cause is, almost certainly, noise due to incomplete convergence. There are other things which can leave dots on he render that are not noise.

I should add a couple of things - first, the render will stop after two hours, by default, regardless of convergence so you may need to give ti more time before adjusting the threshold. Also, another way to make DS render longer is to raise the Render Quality, which makes it more exacting about what it counts as converged.

McGyver

I use glue traps or those big bug zappers... usually that keeps the pixies in check, but if I find a big nest outdoors I'll use a can of Pixie Spray.

EDITED TO CORRECT: Oh... Pixels... Thought you had a pixie problem. Never mind.

Moogoo

Just for information sake the biggest cause of noise is low light conditions, alot of people to avoid this will render with more light then knock back the light in photoshop/ gimp or with the tone mapper/ enviroment options.

AllenArt

Richard Haseltine said:

Well, they are dots - but their cause is, almost certainly, noise due to incomplete convergence. There are other things which can leave dots on he render that are not noise.

I should add a couple of things - first, the render will stop after two hours, by default, regardless of convergence so you may need to give ti more time before adjusting the threshold. Also, another way to make DS render longer is to raise the Render Quality, which makes it more exacting about what it counts as converged.

Or, if you set the Max Time to zero under Progressive Rendering, it will take as long as it needs to reach convergence - given you have the other settings set up correctly :) 

beachlegs

Richard Haseltine said:

Well, they are dots - but their cause is, almost certainly, noise due to incomplete convergence. There are other things which can leave dots on he render that are not noise.

I should add a couple of things - first, the render will stop after two hours, by default, regardless of convergence so you may need to give ti more time before adjusting the threshold. Also, another way to make DS render longer is to raise the Render Quality, which makes it more exacting about what it counts as converged.

Thank you,  I am using Stonemasons new set, I had this problem with another of Stonemasons sets his lighting is awesome just shows alot of noise on my renders for some reason. Going to start again with new settings and see how it goes :)

Richard Haseltine

If it is dropping to CPU and you are suing the default maximum time then it may well be that you need to give it longer (or, as AllenArt says, up to forever) - though Stonemason's sets in themselves are usually pretty efficient about resource usage.

beachlegs

Richard Haseltine said:

If it is dropping to CPU and you are suing the default maximum time then it may well be that you need to give it longer (or, as AllenArt says, up to forever) - though Stonemason's sets in themselves are usually pretty efficient about resource usage.

I have it working after your advice to give it longer and AllenArt, It is looking great thank you and everyone who gave advice I appreciate all your help :)