All language subtitles for 2月29日 (11)

guys welcome to this uh tutorial

uh this is just a quick tutorial about

um some of my techniques

um and mental process about uh

a technique I call highlight stacking

or kind of uh four layers of ping

uh would be kind of another name for it

um but this is just a free preview

of a class will be releasing about a week or two here

nuke44 which is advanced grading

and relighting so we take a picture like this

and we transform it into a picture like this

so we use a variety of advanced

composing techniques to achieve this result

so that would be about 12 to 15

dollars when it comes out

and if you want to be notified

you can sign up in the description below

and I'll send out an email pretty soon

but you can enjoy this free preview

of just a mental process of mine

in terms of how to stack and

think about lighting

the concept of and I called it

the four layers of ping

which is talking about specular highlights

and what I mean by this is

if we're going to start building up the interactive

light bounces around

our light here

we need to understand how to do it and it's not just

like as simple as taking a grade

in a radio and you know this might be your intuition

you go here and okay well

there's a light bouncing off of these lights

it will just go here and we'll just place a grade

and we'll just grade it up

and we'll start to you know

put some some green around it

let's actually do this on our comp real quick

just to show you

that we're working out up here

so if I put this here we'll say okay

let's actually do it

do it before

so we would put it underneath our light

we do our grade or whatever

and we would look at that

and

let's just go here

and you know something like that

that's actually not the way to do this

that would be kind of the base layer

but it's not that simple

and I'll show you why

so if I just stack a couple radios here

like I said this is probably the intuition

and honestly this is how a lot of

Photoshop artists are doing it and Lightroom and stuff

but I would say that's not advanced

and it's not necessarily

you're not considering material properties

so it's kind of like what my first lesson was about

about specular and glossiness and

those things that we need to consider about reflections

so this is not exactly

sort of a realistic result

and maybe this the wrong color

but I can tweak it

I just want to show you guys the wrong way

before I show you

the way that I'm thinking about it

and

not to say that my way is the only right way

and there's

probably other ways that people think about it

but I have a mental way of

breaking it down that I think will be useful to you

if you're learning this

so that's kind of okay

you know there's some kind of balance light

but it doesn't really feel like it's coming from that

light so let's compare that to my comp

and we'll see exactly the difference

so here's that

versus

what I just showed let's just take a look back

versus this you see the difference

so there's a lot of reflections happening here

there's different material properties

you see like the metal pipes and the metal pieces are

pinging out differently than the surface materials

and you see some reflections are catching it

glancing angles

we also have versus just like a broad color

we actually have

light hitting surfaces like this

on this side of this lantern that's off

some of the wires are catching highlights differently

because they're closer

we have

you know like catching over in these like clothing

whatever is hanging over here

you know some details catching on the side of

signs and all these

tiny details

so the way I'm mentally breaking it down is

and this is why I called the class the lecture

for paints so essentially

what this means is I'll just draw it out for you

how I mentally think about it which is

a useful way to break it down so let's do this

set this to all

and I'm gonna draw it after our

the lights that we did here

okay so if I'm thinking about this

again it's the pool is a light idea

so like explaining the other elections okay

okay so our first

areas of balance light

well let's just say well it

started near the wall so like

what's closest to everything nearby so

we're gonna

see that this whole area is gonna be lit up

this area is gonna be lit up and then obviously like

the area furthest away down here is gonna be lit up

but this is gonna be

decayed a little bit

so this is not gonna be as bright

as the ones that are closer

so you're thinking about that quadratic decay

so it's really

so let me switch with a different color

thinking about that quadratic decay

so here it's gonna be really bright

and then

let's see

go to

like a warm color

and then here it's gonna start to fall off

and of course

the final one which is like our broad

fall off is kind of like this super broad one like this

so like obviously

we want these lanterns to still light up this alleyway

so we created our lights to be bright enough

but obviously it's going to be dimmer further away

so this is like the pools of light idea

but within each pool

this is where the concept of the four pings comes in

so if I'm doing

like let's say I'm doing this area down here

so let's just say

we're going to focus on this

pool of light

and we'll say it's like the ground pool or something

we're gonna have this broad diffuse

that's happening so like I talked about in the earlier

physics of light

lecture we have like the color diffuse

but then we also have like the specular

pings that are gonna happen

so and then that happens in in sort of almost rings

so like towards the hotter areas

we're gonna have different types of paint

so like if there's a reflection

so the color diffuse is actually absorbing the material

it's like the broad

radio like I just showed you

it's kind of the broad just

color that's absorbing the material but

if we imagine that this is a reflection

and these are gonna reflect down into the ground

but they're not gonna reflect like a mirror

they're gonna reflect sort of

trying to draw a line here

they're gonna reflect sort of like

distorted and everything like that

we're gonna get a bunch of pinging highlights so

essentially what's gonna

happen is we're gonna have really bright ones

let me do let me do the colors again

so we're gonna have like the really bright

reflections like where the

mirror is so we have like the mirror

so these are gonna be like the hottest

pings of highlights

but what's also happening is like the broader

specular highlights so

some of that scattering across the surface as a

glossy reflection

and that's why I talk to you guys about

glossiness first

so what's happening is like

those are the

like almost like the mirror

like it's almost mirror

like these reflections that they're really bright

they're going to catch they're really the contrast

but then the secondary ones are

where the lights kind of

scattering along the surface depending on the

depending on the material of the surface but

you'll see you'll have

less strong pings but you still have some kind of pings

falling off in

a kind of a radio around this area

and you know

you might catch some pinks in different areas

around up here and stuff like that

but they're not going to be

as intense as the ones at the very

center because that's like

almost a reflection

and then we're gonna have

maybe even some subtle pinks that kind of fall off in

areas outside

which is like the third

pink so I'm doing green to show that color so you see

all of these different

types of highlights that are appearing everywhere

but finally we have like

something that

is not within this pool of light that's still

reflecting these lights

and that is kind of these

angle of incidence reflections just materials

and surfaces that are at the

right angle to catch reflections

even when they're really far away

so like that's where all the main

glints kind of specular highlights are not glints

but

specular highlights are happening is in this circle

but occasionally you'll get one that's like

way out here so like this light is actually reflecting

it's giving a mirror reflection

to something that's like

way out here and

this surface

here is like reflecting

if this was like reflecting back to us

so like that's kind of I guess if your eye is here

so like this is your eyeball

you know this is an eye this is coming back to us and

that's how I'm thinking of it

so I'm breaking it down and like okay

most of its isolated we're going to get

and this is one pool of light so again

if we're thinking about this concept just for this one

light let me desaturate this

okay let's say pool of light too

the second pool is here

the third pools here

like these are the regions that are gonna get

pools of light

this same pinging concept

I'm gonna do it throughout the whole area

so I'm gonna

also think about the materials I'm looking at

I'm not just gonna randomly put dots everywhere

like I just explained

I'm gonna look at this and say okay well

a metal pipe is probably

less glossy than

like an asphalt surface meaning

less glossy meaning a sharper reflection

so I'm gonna go here I'm gonna paint like

specific sharp highlights

on this pole and this is gonna catch our main

contrasty highlights

and then we're gonna have these like

sort of glossy pinging highlights

let me just put this as a let's opaque

on this wall here

and the wall it's not gonna be completely just

lighting up the area equally

because the wall is made of like let's say

plaster or something like that

so it's gonna be pinging

in a little bit of a broader highlight

something like this

it's still broken up a little bit

but it's still pinging

highlights in a different type of way

but it's still the same concept

4 and I'm just saying before its arbitrary number but

that's usually

the amount of layers you need

you need at least four

layers of highlights to start to get

something convincing

if you just do one layer

usually it's not going to work

so

again and then you maybe have some like

some

little pings in here that are a little bit less bright

still catching a little bit but

not as much

so same concept for all of these pools

so that's that's how you break it down and then

our final

our fourth ping which is like outside of the pool

so we have like three pings inside

so

essentially what you're doing is kind of a

quadratic fall off of

pinging highlights

so again

like the lights it's really hot in center and it

falls off quickly

so it's kind of falling and then like very

sort of like this

it's sort of falling off quadratically

just like our

exponential glow but with with pinging highlights

uh so

yeah so that's

the thing so here maybe this vent here

so I'm looking around at the materials

what you got to think about the surfaces

it's not so simple just to randomly put

colors everywhere you want to look at

you know this thing's metal so

it's gonna have more mirror like reflections

at a further

distance so like maybe this vent we might catch some

glancing angle highlights on this surface

from our light so that's our fourth pane so again

I'm gonna look around the scene and

logically think about

what surfaces might catch that

and it's a painting you know it doesn't

it's not 100% photoaccurate but

if it looks like it that's all that matters right

so that's kind of

so I might say okay

this surface here is a little bit further away

so maybe we'll paint

pingy highlight

on that edge

or maybe we'll paint something just like catching just

just up here a little bit

and maybe some other

this is the fourth ping the furthest away one

that I'm doing here so maybe

let's

let's look around here

so like okay

we could look at this thing here and say okay on the

edge of that little metal bar we're gonna catch

some little highlights on the edge of that

and that's how I'm thinking about it

so that's how we're gonna approach this

and maybe I'll split into another video

so I know this one's already getting long

but I guess this is like the theory lesson of

the way I break it down and did so for my for my

matte painting here so let's go down

and I'll just show you again like my comp

so we have this thing

we have again the broad diffuse

so you see it's absorbing the color

but nothing is really looking reflective right so

and we layered this below our light sources

so we create the light sources first

and then we go back

and we do the interactive

so okay now we have layer 1 which is kind of

the hotter pings but maybe not the hottest

so there's kind of

pings that are close but there's going to be even more

so that's

that would be like the second layer of pinging

and then what we do is oh look we start to boost

in the very center so those let me go back

sorry let me just

this was quick

so okay so I started sort of

with the pool of light

which is the green

little dots out here which is like the diffuse sort of

and then and maybe some slight pinks

and then we have like the yellow

so I started with the yellow pinks which is

see just want to make sure I can

show you guys without confusing you here

okay so that's the green kind of diffused

broader pool light and then we

start to bring in the yellow which is a

this these the middle pinging highlights

and then I boosted those highlights and I put it

I put some small

pings on top of that

so you see I stacked some some really bright

reflections right in there

on the center so that's like that's like the red

highlight I guess that's the way I explain it

hopefully that makes sense you guys

I don't think anyone ever explained to me like this

but that's how I've mentally broke it down

for this project

so

let's see

and then we have our kind of our lights

that we that we built already

and of course and then again I went back

so like I said okay this is a pretty good result

but there's still some areas that feel only diffuse

so that's what I'm looking out for

I'm looking at this area and I'm saying well

you know where's the where's the

where's the pings if you don't see pings

it's probably not right

so if I if you see what I did here

so at the end there I

was I was looking at it and I'm like okay well

it still feels flat in some areas

so I kind of went back with a paintbrush

and a key I'm going to show you how to do this

in the next lesson like actually but

this is just the theory lesson

so we see I went back and started ping out

a little bit more on some of these surfaces

they're not as they're not as

small of pings like I said they're glossy they're

you see how I blurred those yellow dots

they're kind of

a broader ping of highlight

but there's still sort of this ping

and let's see

continuing and then I even added some more

so I went back

with a tiny paintbrush add the tight pings

really on the little surfaces I'm looking at the angle

surfaces around

so I'm looking okay

that's kind of it might catch an angle

might catch a highlight there

so I go there and I paint it

let's continue on and then we see here

again I'm doing this layering technique on the wall

and that's kind of how I approach it

so let's see continue through

and that's pretty much it that for that area

later on in the comp maybe at the very end

I added some more

you see like our ground doesn't look very reflective

so that's gonna come in a later part of the comp

where I really ping out highlights more

in terms of the

let's go to the end here

just let the end load here for a second

but yeah the reflections are going to need that

same concept of pins and

quadratic falloff

but I do it in its own part of the comp because

it's just

easier so this all looks kind of complicated

if you're just looking at it but it's not

it's just the way I'm mentally breaking it down

you know like I said you have the very hot ones

you have some

glossy ones around it

then you have like the diffuse and kind of a little

bit of glossy ones that are further away

so we'll explain the

reflection part next but we're gonna focus just on

getting this effect for the lamp

so let's

move on to the next lesson into that

alright guys thanks for watching the video

I hope you appreciated the free preview of this class

I'll be releasing a few other free previews as well

but if you're interested in

this or other classes

all the information is in the description below

and if not

if you just want free content YouTube that's fine too

I appreciate a like if you can

as it helps YouTube algorithm out and

thanks so much