Author Topic: RWB Cleveland  (Read 607 times)

2020-08-17, 13:02:32

TomMannington

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"There's something about this that's so black, it's like how much more black could this be? And the answer is none. None more black."

I'd wanted to do an all black RWB for some time and this quote I thought fits rather well with the wonderful absurdity of RWB Porsches. There are another couple of Tap references in the images, but I wont give them away.

I used a different workflow this time, using both the "for compositing" option in the Corona shadow catcher material as well as "transparent alpha" combined with Corona light mix to be able to seperate lighting elements such as the head & tail lights. Using the "For compositing" meant I could better match the DoF of the backplate which was stopped down to f/4 on a 35mm sensor, and composite in photoshop. Doing it all in the Corona VFB means the DoF of a Corona Camera & backplate never really matches up.

I've also attached the photoshop layer stack to show the compositing workflow. I prefer the end result with this method but it is slow and does mean less images produced in the same timescale as I had to render out a "For Compositing" render which takes a lot longer to get down the the noise threshold as well as a standard lightmix one.

3DS Max 2019, Corona 6.0 (RC2) & Photoshop

2020-08-17, 15:12:39
Reply #1

romullus

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Doing it all in the Corona VFB means the DoF of a Corona Camera & backplate never really matches up.

Yeah, Corona users has been complaining about this for very long. It would be nice if the team would finally address this issue.

I like your Porsche renderings a lot. Keep them coming!

Is this modified Szymon Kubicki's model, or completely independent one?
I'm not Corona Team member. Everything i say, is my personal opinion only.
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2020-08-17, 15:56:33
Reply #2

TomMannington

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Doing it all in the Corona VFB means the DoF of a Corona Camera & backplate never really matches up.

Yeah, Corona users has been complaining about this for very long. It would be nice if the team would finally address this issue.

I like your Porsche renderings a lot. Keep them coming!

Is this modified Szymon Kubicki's model, or completely independent one?

Thanks Romullus! The model is purchased, with a lot of modifications - https://gumroad.com/tehrenderguy#txAtB

2020-08-18, 16:06:21
Reply #3

maru

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Doing it all in the Corona VFB means the DoF of a Corona Camera & backplate never really matches up.

Yeah, Corona users has been complaining about this for very long. It would be nice if the team would finally address this issue.


You guys mean that the Corona DOF cannot be disabled for the background/backplate image, right? So when using a photo, which already has some DOF, the final DOF is amplified?

(Internal ID=147284084)

2020-08-19, 09:42:12
Reply #4

TomMannington

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Doing it all in the Corona VFB means the DoF of a Corona Camera & backplate never really matches up.

Yeah, Corona users has been complaining about this for very long. It would be nice if the team would finally address this issue.


You guys mean that the Corona DOF cannot be disabled for the background/backplate image, right? So when using a photo, which already has some DOF, the final DOF is amplified?

(Internal ID=147284084)

Yes. Though I suspect a problem may occur when taking into account the shadow catcher ground plane. Disabling the DoF for the backplate but not geometry would still result in differences in DoF where a shadow catcher is used unless that could be excluded from DoF as well.