Chromatic Aberration in C4D..

[Simon Wicker]

the easiest 'cheat' is to render three times using different indexes of refraction for your glass and then combining the R, G and B channels from different renders to give a rainbow effect within the glass.

cheers, simon w.

[Navstar]

I think would be far easier to achieve with a post process in your After Effects/Nuke/Fusion/Shake. You *are* using a compositing program, right?

[MidnightCow]

Yeh, i have access to After Effects..

What i was thinking was not specifically chromatic aberration that occurs with glass objects, but rather the effect occuring within a camera lense.. So to make an image appear more `real` as if it had been taken with a camera and has some of these flaws.. Dof being a similar example..

[Shademaster]

Magic Bullet Looks does it for free with stills, you will have to buy the full version for animation capabilities.

Get it for free (demo works with still images)

http://www.redgiantsoftware.com/products/all/magic-bullet-looks/

[3dj]

It's funny to think you would want to do this, but I get it, pursuing more realism. When I use one of my more modest lenses, the Chromatic Aberration is a little noticeable when zoomed @ 100% and I adjust it out using photoshop using camera raw. I would imagine, if you are rendering a still you could use it with extreme settings to add it in using camera raw, but again, I for one always want to get rid of it, it is pretty ugly.

-Jim

[MidnightCow]

Yeh lol pretty ugly but for example in those subtly blurred edges in the background of an image it could work, cg is really often too perfect and i just figured this`d be one way to abstract that a bit.. Specially say if u were working with background plates or whatever of video footage..

[edit]

Shademaster: thnx for the link will check that :)

[firewire8]

I use photoshops lens distortion filter for adding chromatic aberation. It works quite well and you can adjust the strength of the effect.

[MidnightCow]

firewire8: Cheers - u are also from aberdeen?

[Navstar]

Check out this awesome animation. All the chromatic aberration was done in post -- in fact, all the film like effects were done in post.

(click on download movie)
http://euqahuba.com/digger.html

[firewire8]

firewire8: Cheers - u are also from aberdeen?

Yes mate, great weather lately in the deen eh.

Navstar that is a cool little movie. I love the post effects and the aberation because it adds grit and makes it a little more funky around the edges. These post effects are comparable to the de-digitizing plugins for audio software. It's good to add an analogue feel

[ThirdEye]

When I use one of my more modest lenses, the Chromatic Aberration is a little noticeable when zoomed @ 100%

I got some quite expensive lenses in my arsenal but CA is always around the corner, no matter what. Adding it to CG images pushes the realism boundaries a little further.

[MidnightCow]

Yeh that digger piece is the badgers, really makes good use of artificial flaws..

And to further ur point ThirdEye even with expensive lenses, moving picture cameras are fraught with these errors.. and also any old vhs tapes of home video or anything from the oldskool bunch of prosumer camcorders like the panasonics etc..

firewire8: bit tooo hot for my liking specially when having to work. also i checked out the photoshop distortion filter - nice :) U mentioned audio post effects are u familiar with that stuff?

[Erik Heyninck]

If you call imitation of the flaws in tools created by humans that show artefacts that are not there in the real world a step further into "realism", then of course you're right.
But then again, that's probably why it is not called "realism" but "photo-realism".

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