Optical vignetting test
Optical vignetting test
Just messing around with a test implementation of optical vignetting.
You can read about optical vignetting here: http://toothwalker.org/optics/vignetting.html
Optical vignetting is responsible for the squashing / cat-eye effect of the out of focus lights near the edge of the image.
The scene here is just a matrix of small spheres with an emitting material. The camera is quite out of focus, obviously Aperture shape is circular.
You can read about optical vignetting here: http://toothwalker.org/optics/vignetting.html
Optical vignetting is responsible for the squashing / cat-eye effect of the out of focus lights near the edge of the image.
The scene here is just a matrix of small spheres with an emitting material. The camera is quite out of focus, obviously Aperture shape is circular.
Re: Optical vignetting test
Sounds like a interesting new feature!
Can you tell us if this effect comes for free (regarding speed), and if it will be triggerable?
Can you tell us if this effect comes for free (regarding speed), and if it will be triggerable?
polygonmanufaktur.de
Re: Optical vignetting test
Hi Zom-B,
It should be pretty cheap.
It will probably be controlled by a couple of parameters - lens length, and lens radius. Setting lens radius to a large value will effectively disable the optical vignetting.
It should be pretty cheap.
It will probably be controlled by a couple of parameters - lens length, and lens radius. Setting lens radius to a large value will effectively disable the optical vignetting.
Re: Optical vignetting test
Got spherical aberration working, woo!
Spherical aberration manifests as a bright edge to the bokeh.
I'm trying to match the spherical aberration on my Nikon D5000. It looks like the D5000 has negative spherical aberration.
The top image below is the Indigo render showing spherical aberration.
I've attached the photo from my Nikon as well.
Spherical aberration manifests as a bright edge to the bokeh.
I'm trying to match the spherical aberration on my Nikon D5000. It looks like the D5000 has negative spherical aberration.
The top image below is the Indigo render showing spherical aberration.
I've attached the photo from my Nikon as well.
Re: Optical vignetting test
And here's a render show both optical vignetting and spherical aberration:
Re: Optical vignetting test
That's really neat. A perfect little detail to make the renders that much more realistic. Let me know if you need more samples. Or perhaps you could even build a format for this to import lens characteristics. Would be fun to maybe reverse engineer the Adobe Lens Profiles so that they can be used with this.
- zeitmeister
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Re: Optical vignetting test
Very cool!!!
Can't wait to get this implemented!!!
Can't wait to get this implemented!!!
Cheers, David
DAVIDGUDELIUS // 3D.PORTFOLIO
·
Indigo 4.4.15 | Indigo for C4D 4.4.13.1 | C4D R23 | Mac OS X 10.13.6 | Windows 10 Professional x64
DAVIDGUDELIUS // 3D.PORTFOLIO
·
Indigo 4.4.15 | Indigo for C4D 4.4.13.1 | C4D R23 | Mac OS X 10.13.6 | Windows 10 Professional x64
Re: Optical vignetting test
cant wait too, im big fan of lens effects simulation!
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Re: Optical vignetting test
Are these in the next Indigo release?
Re: Optical vignetting test
They're not available yet, maybe after 3.4 I'll try and get this stuff ready.StompinTom wrote:Are these in the next Indigo release?
Re: Optical vignetting test
Hey that's not vignetting, that's distortion.OnoSendai wrote:Just messing around with a test implementation of optical vignetting.
You can read about optical vignetting here: http://toothwalker.org/optics/vignetting.html
Optical vignetting is responsible for the squashing / cat-eye effect of the out of focus lights near the edge of the image.
The scene here is just a matrix of small spheres with an emitting material. The camera is quite out of focus, obviously Aperture shape is circular.
Vignetting is the reduction of brightness with increasing distance to the image center
Etienne
Eclat-Digital Research
http://www.eclat-digital.com
http://www.eclat-digital.com
Re: Optical vignetting test
It results in an effective decrease of illumination towards the edge of the photo/sensor.
Re: Optical vignetting test
This is awesome! When will it be implemented? I'm very eager to render my scenes with a less than perfect lens
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Re: Optical vignetting test
I usually just take a picture of my screen with a film camera.Olis wrote:This is awesome! When will it be implemented? I'm very eager to render my scenes with a less than perfect lens
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