How to Get Photorealistic Depth of Field with Nuke's Bokeh Node with

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How to Get Photorealistic Depth of Field with Nuke's Bokeh Node with

Рет қаралды 17,748

Күн бұрын

In this tutorial, VFX Artist Alfie Vaughan guides you through different methods for adding depth of field to a shot by defocusing the background, midground and foreground at various degrees with several of Nuke's defocus nodes. He also demonstrates how the Bokeh node is Nuke's most powerful defocus tool, giving you maximum control over the blur pattern to suggest different lenses and focal depths. Use this tool to really add photorealism to your shots.
Note that Alfie is using a plug-in called Channel Hotbox, which is a python script from Nukepedia for quickly switching between channels. You can easily do that without the plug-in using the dropdown at the top of the Viewer.
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0:00 Intro
0:47 Available Defocus Options in Nuke
2:45 Comparing the Results of Each Defocus Node
5:53 The Bokeh Node
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Пікірлер: 41

@equal2k4 6 ай бұрын

is there any possibility to re-upload the colouredge gizmo ? seems it's down for the whole interwebz

@usernoice Жыл бұрын

Fantastic stuff! Thanks for sharing.

@AlfieVaughan Жыл бұрын

Thanks!

@alasenmonociclo 8 ай бұрын

Hi , I would like to know where find, or buy, those aperture textures??? Anyone knows?. thanks .

@reddre453 2 ай бұрын

Defocus, Convolve, Zdefocus and Bokeh look the same to me. Defocus is the fastets of them so it's the clear winner for me

@CrisBlyth Жыл бұрын

Daniel Maskit would be proud ! :)

@magusofthebargain Жыл бұрын

Thanks for making this video. Please upload higher resolution version.

@FoundryTeam Жыл бұрын

Hi, happy to say the video is available in UHD. It might have been processing when you took a look at it.

@ozgurtaparli7504 Жыл бұрын

Built in blender renderers (eevie, cycles) have Z depth pass. In this example edge issues on bokeh looks like the result of using mist as Depth. Mainly because mist pass is interpolated. Flare node can be used to create single frame bokeh images if you do not have access to a bokeh kernel lib. Bokeh is a great addition to default toolset though.

@AlfieVaughan Жыл бұрын

Yes I'm using the mist pass here. Until quite recently the proper depth pass from Blender didn't work properly and the mist was a better option even though it's anti-aliased. I'm old school!

@thornnorton5953 Жыл бұрын

Two questions: Why use the mist channel instead of the depth channel, which is more beneficial for depth of field? Blender has a suitable depth pass that outputs measurably correct data. Also, Why use glow only on the explosion instead of the entire render? Is it a substitute for volumetric haze or camera glow? Just curious about your thought process. Thanks!"

@AlfieVaughan Жыл бұрын

The mist pass is anti-aliased whereas the depth pass has no anti-aliasing. And as for the glow, I just comped this very quickly in this video. I have a livestream on my channel where I comped it properly with lightwrap and stuff if you want to see the actual comp.

@ariaperdana24 Жыл бұрын

Well the depth pass shouldn't be anti aliased btw, it will give you false value

@3dostler 8 ай бұрын

I'm using Nuke 15.0. I don't have colourExtend. Where do I find it?

@epereyralucena 5 ай бұрын

how do you fast switch channels?

@sandswan Жыл бұрын

Any way to fix dodgy edge pixels in a depth pass when it's multi-layered? As in, not just a single element on black, but a full scene?

@AlfieVaughan Жыл бұрын

It's much harder. You can sometimes blur the depth pass a bit to soften the effect. Also try eroding. But it's much more difficult to fix it when the elements are on top of other parts of the scene!

@magusofthebargain Жыл бұрын

TLDW: if you don't edge extend your "mist" channel (depth channel in the new Bokeh node), the edges will not be correct.

@AlessioAntonelli96 8 ай бұрын

is this available on nuke 13?

@coccosoids Жыл бұрын

What is he using to jump through channels in the viewer?

@josenarvaez3567 Жыл бұрын

You can use PgUp PgDwn to cycle thru layers

@AlfieVaughan Жыл бұрын

It's a pyhton script called Channel Hotbox from Nukepedia!

@coccosoids Жыл бұрын

@@AlfieVaughan thanks!

@lightningspeed6142 Жыл бұрын

what shotcut he using for switching between channels ? although great tutor !!

@AlfieVaughan Жыл бұрын

Thanks! It's a Python Script from Nukepedia called Channel Hotbox

@lightningspeed6142 Жыл бұрын

@@AlfieVaughan alright thank you !

@leodgeorge6221 Жыл бұрын

Where we can get these bokeh kernels?

@AlfieVaughan Жыл бұрын

Mine's just a pack that someone I used to work with sent me. If you just google free Bokeh pack you should be able to find them. There's also some gizmos online that generate procedural kernels and you can adapt them with sliders etc!

@monocore Жыл бұрын

is that a filtered depth pass

@AlfieVaughan Жыл бұрын

Yeah the mist pass is anti-aliased

@M4Pxls Жыл бұрын

I do respect Alfie Vaughan's works, but here there are a lot of misconceptions, starting from the use of a clamp node to the use of mist pass from blender that is not a depth pass but kind of (cannot be unfiltered). Looks like a video made in a hurry.

@AlfieVaughan Жыл бұрын

Normally with CG when I do any grading I use a copy and premult setup with a grade node that has black clamp enabled which fixes any negative values. I didn't do it in this case as I wasn't focusing on colours so I just used a clamp. But it has the same effect. I don't really see what your issue is with that approach? I set the max value to 100 which was way above any values in the render so I'm not actually clamping anything in terms of range other than what was below 0 and causing issues. If this was a serious comp I wouldn't have clamped it at the end on top of the whole thing but this was just a demo. As for the depth pass, I've had very mixed results using the proper depth pass. I've been using the mist pass instead for a few years and have never had any problems with it. The values are different but the fact the mist pass is anti-aliased seems to work better a lot of the time. Just my personal opinion though. As this video is about Bokeh and not specifically using renders from Blender I don't think it's really an issue...

@M4Pxls Жыл бұрын

@@AlfieVaughan You certainly know what you are doing, but the video is probably too short for a novice artist and lacks the explanations you have given here. A tad too much advertising in general. But that's just a personal opinion.

@changleon7441 Жыл бұрын

@@AlfieVaughan blender’s lack of implementation in deep exrs is really a pain in the ass for this type of defocusing. Given the options between mist, depth, and eevee depth, i also find that cycles mist works the best for defocusing, with a heavy amount of cleanup.

@AlfieVaughan Жыл бұрын

@@M4Pxls This was just an introduction. There's a long video coming soon to follow that will be more in depth.

@AlfieVaughan Жыл бұрын

@@changleon7441 I hope they introduce deep soon but I can't see it happening. It would be catering towards very high end VFX which I don't think they're that interested in. We're getting some good stuff with lightgroups etc recently but I think deep is a long way off in Blender sadly. Glad to hear someone else has a similar experience with the mist pass. A lot of people in my Discord server said the same thing after this video was released!

@monocore Жыл бұрын

that render is weaaaaak

@AlfieVaughan Жыл бұрын

👍