Mister3d

Hi quys, I'm not an architectural visualiser, so you know about this much more. I have a question about noise reduction in renderers regardless a specific renderer.
At what zoom distinct noise is unacceptable? I just thought it should dissapear completely, but looks like it's not possible at all: at 1600% zoom I can always see it. At best settings I manage that it slightly noticeable at 800%, at less it's not noticeable. So what is your zoom quality, that's to say?
Thank you.

manta

How do you see noise at 1600x, aren't you just looking at individual pixels...

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Mister3d

Yes, looks like I lost common sense. So at what resolution do you check noise?

pailhead

Native?

Mister3d

I mean noise which appears after raytracing, after glossy reflections mainly. Because if you make a gradient in Photoshop, it will be perfectly smooth when you zoom in, but if you make a glossy reflection it will be never smooth at large zooming. So as I understand removing moise is relative.

louis.cho

who will look at your work at 1600%

BrianKitts

The best answer to your question is no noise is acceptable unless you want noise... which artistically can be done. That being said....as long as your image is sized properly for how it's going to be printed 0 noise at 100% is the goal.

Anything beyond 100% and you are dealing with blowing up the image and printing larger than the native image....which brings you to the world of how large does an image need to be for oversize printing. That's a whole different world when something that you hold in your hand can be printed at 300dpi, but something on a billboard viewed from 50 meters away you can get away with 72dpi.

So evaluate how it's going to be printed, how far away is the image from the viewer and check out the threads on this forum about large prints to get your answer. Once your size is determined adjust the render settings to achieve your desired output.

Mister3d

Thank you, Brian. Well, this is very good explanation. 100% is the goal. One thing that seems to me that 3d visualisers look at some details closer than 100%, like antialiasing and noise, but sure only 100% matters if for monitor size, quite logical.

colinsmith

I think it would be worthwhile to have a close up look at a large resolution digital photo. Even a clean one has a lot of noise. Generally matching a render to a photo means various combinations of adding noise and bluring.....

Mister3d

Yes, but matching digital footage to a film grain is made not with the noise from a renderer, but in post-production as far as I know, and there should be no noise in renderings themselves.