Unbiased camera/lens effects? Glare? Flare? Chrom Abrration?

[colorlabs]

Hi, has anyone ever tried doing lens effects in an unbiased renderer? Last week I tried simulating chromatic aberration by building a lens and setting the new spectral dispersion attribute... it didn't really come out right, most of the colors were intact except around the very edges of the lens itself.

[colorlabs]

Looks like Maxwell Render 1.0 could do glare, but all the info about it is very old and all the images are broken links

[jamnique]

I tried simulating chromatic aberration by building a lens and setting the new spectral dispersion attribute...

How can you build a lens? Could you elaborate?

Maxwell indeed did glare and dispersion, i don't know how "physically accurate" that was though. It looked fine.

Here is a tip to making great looking dispersion effect, by Master Zap.
The part you're looking for is almost at the end of this post:
http://mentalraytips.blogspot.com/2009/ ... s-and.html

It requires three or more renders, but should be possible to achieve in every raytracer and in an unbiased renderer as well.

[colorlabs]

Hi jamnique, I'm not talking about dispersion for gems and crystals, Octane 2.48 already does that. I'm talking about chromatic aberration in the output image, like a photo taken by a camera with a crappy lens. There are AE plugins for this, but I thought it might be neat to do it within Octane, simulating the dispersion in a real camera lens.

[Jaberwocky]

Hi jamnique, I'm not talking about dispersion for gems and crystals, Octane 2.48 already does that. I'm talking about chromatic aberration in the output image, like a photo taken by a camera with a crappy lens. There are AE plugins for this, but I thought it might be neat to do it within Octane, simulating the dispersion in a real camera lens.

It's ironic.I spent an absolute fortune on a decent lens for my camera to get rid of this effect.Well that and then tuning the photos up in Adobe Camera raw.

Now your trying to re-create it in octane...

so that you can remove it in Photoshop?



Only joking.

[jamnique]

Hi jamnique, I'm not talking about dispersion for gems and crystals, Octane 2.48 already does that. I'm talking about chromatic aberration in the output image, like a photo taken by a camera with a crappy lens. There are AE plugins for this, but I thought it might be neat to do it within Octane, simulating the dispersion in a real camera lens.

It's ironic.I spent an absolute fortune on a decent lens for my camera to get rid of this effect.Well that and then tuning the photos up in Adobe Camera raw.

Now your trying to re-create it in octane...

so that you can remove it in Photoshop?



Only joking.

Hehe it's the same with vignetting in photography Spend a ton of money to get rid of it, and then... REINTRODUCE IT IN POST!
Anyways, i didn't know Octane already did diamonds' dispersion. I guess chromatic aberration will come with custom bokeh maps. Then you can plug something like this, and get something like that:

[MaTtY631990]

Another feature that I would like to see in octane would be bokeh DOF effect for camera that would be awesome.

[jamnique]

From what i remember it's coming as a 1.x feature. And then you will be probably able to do what i posted above. If custom bokeh maps will be supported.