thank you for adding the fisheye lens scene, I`ve seen it on your other thread, but didn`t read everything.
So if someone is wondering how to control the chromatic aberration effect:
Play with the dispersion in the glass lens material, take it down to 0.001 to get a more subtle effect or just turn it off.
To get less distorion (but chromatic aberration):
Play with the Index of the glass lens material, 1.3 is way less distortion, 1.0 is without any distortion (but with chromatic aberration, if you just go for this effect inside Octane without lens distortion. But it still does subtle changes to the picture, so keep in mind, if using this for composeting work, it might not match 100% with passes without the effect).
Of course not the fish eye lens circle effect anymore, but maybe thats useful for somebody to know.
Cya,
ChrisVis
C4D R15 - C4DOctane 4.0 | Win7 64 | NVIDIA 417.22 | EVGA GTX 980 Ti SC | EVGA GTX 780 Ti SC |EVGA GTX 780 Ti SC
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thanks chris for writing this, i must confess that it is more hard for me to explain in english than preparing some scenes
i'm still sperimenting with this setup, i will share another version with a little improvement that is come to my mind as soon as i can.
another thing to say is that is possible to play with FOV ( now is a 21 mm) in congiunction with the index of the glass.
the autofocus option must to be desabled and it's also possible to play with the distortion value of the thin lens camera node
ciao beppe