Creating Moire

[octavtirziu]

Hello,

I have a client that keeps asking for more of the "moire effect"each time. Is there any way i can influence the settings to produce more moire ? because if not i'm going to cheat it in photoshop.

[Dionysios.TS]

Hello,

I have a client that keeps asking for more of the "moire effect"each time. Is there any way i can influence the settings to produce more moire ? because if not i'm going to cheat it in photoshop.

I think rendering the image in a highest resolution and then lower it down in photoshop should fix a bit this thing but I saw your model and I guess with all those pattern moire is inevitable...

Thanks,

Dionysios -

[octavtirziu]

my client is actually asking for moire :) .  It's an elusive effect also because it appears and disappears depending on the zoom levels

[romullus]

What a strange request :] Usually Moire is considered as unwanted artifact. You should take opposite actions than trying to fight Moire - render to lowest resolution you can, try to use smallest possible repeating pattern, lower or completely disable image filtering. That should guarantee a "nice" Moire for your client :]

Edit: might be worth to try to downscale already rendered image with nearest neighbour interpolation.

[romullus]

Just tested it - downscaling with nearest neighbour interpolation works indeed. if only you can afford such downscaling

[octavtirziu]

Strange indeed. I was now trying just that, rendering at a low res that would not make things ugly, set the filter radius to 1 and testing different image filters. :))

[octavtirziu]

"downscaling with nearest neighbour interpolation works indeed"

this is pretty moirey :)) how did you do it?

[romullus]

Photoshop image>image size, width&heigth 50%, resample->nearest neighbour. I did it twice, for a greater effect :]

[Dionysios.TS]

my client is actually asking for moire :) .  It's an elusive effect also because it appears and disappears depending on the zoom levels

Sorry for this, I read so fast before and I thought the opposite... :)

[octavtirziu]

Thanks,

This scaling thing works great. Never thought i would end up trashing my images on purpose, but i guess there is a first for everything

[maru]

That's a funny request indeed! What Romullus suggested seems to be the best "solution".

[TomG]

Does this mean there's a market for a new type of plugin, the Image Worsifier, guaranteed to downgrade the quality of your images and introduce as many artifacts as possible?

[romullus]

By the way, probably it would be wise to make copy of your image and downscale both with different settings - one with nearest neighbour interpolation for Moire and the other one with bicubic for the rest of the image. Then load both images into different layers and blend with masks.

[romullus]

Does this mean there's a market for a new type of plugin, the Image Worsifier, guaranteed to downgrade the quality of your images and introduce as many artifacts as possible?

Of course there is - CA, bloom, glare, flare, vignetting - all these effects are artifacts, yet we almost always want them in our renders :]