All language subtitles for 2月22日 (8)

in this tutorial I'm going to cover the 4

standard wretch of lights

how to use them and how to begin rendering with them

the four standard lights are directional light

spot light point light and an area light

and if you used by a before

and you've inserted lights and rendered

then you probably already heard the dish lights

however instead of using the myolites

redshift comes with its own

set of these standard 4 lights

that are very similar to the myolites

so you never want to use the Maya lights

if you're rendering with Radshift

because Radshift has its own that you should use

so to get access to these four standard lights

go to the Radshift tab

and it's going to be this first icon

this yellow icon right here

and if you right click on it

you have access to these four standard lights

a real light point spot and directional

now many of these lights have very similar properties

between each other

so if you cover one

they translate to the other ones

so there's going to be some crossover

between all of these lights

but I'm going to start with the direction light first

so right click on the icon

to get access to more and choose the direction light

whenever I insert a light

I usually try to

scale it up so I can find it inside the scene easier

by default it comes in very small

and if you scale the light

make it larger

it does not affect its intensity

except for one light

which is going to be the area light

if you scale

the area light it does affect its intensity

but your direction light

your spot light and your

point light do not

so I'm gonna hit R and just scale this light

and just move it back

when it comes to the direction light

where you place this light doesn't matter

think of the direction light as the sun

and only the angle in which

shines onto the scene matters

but where it appears in the scene

has no relationship to the intensity of it

and to the objects it's basically an infinity light

and just think of it as it's your sun

your sun or your moon

and you should only have one of these inside the scene

so the only thing we need to do

is we need to rotate it

and position it

so it just shines on to as scene better

so I'm going to hit E4 rotate

and just angle it down

and maybe give it a bit of an angle to the side

to get access to the properties to change for any light

you will find them inside the Attribute Editor

if you come over here go to Atribute Editor

open this up you will have your standard

controls for changing

the properties for that selected light

if you don't see it when you switch over

to the Atribute Editor

you may need to make sure

that you have the proper tab selected

you might be here or some other tab

just make sure you switch over to the right one

and let's go ahead and render

come over here

left click to open up your render view

and you'll probably have nothing here

this is one of my this is the previous

quick render shot that I did of the same scene

so usually you will have nothing here

so to render your first shot from the

perspective viewport

just left click on the surrender icon

and this will render

whatever you're looking at in the perspective viewport

so by default

your

directional light is going to come in very intense

so the first thing you should change is the intensity

if you come over here and Attribute Editor

you're going to find the intensity value right here

intensity multiplier

so 100 is very strong and you may want to go ahead and

change it down to 1

that's more of a reasonable value to use

so I'm going to change it to 1 and re render your frame

and here we have

our first rendered scene with the directional light

so in order to get more of a sunlight kind of

effect from your directional light

you have to change your color

adjust intensity

and just kind of find the right values between the two

those are usually the go to

when you setting up your sunlight

your directional light

when it comes to color you have an option

you can choose to

control the color itself by left

clicking on this color icon

and then choosing the color of your light

so let's say

if I wanted to have a little bit more warmer effect

just choose the color

and every run do you see

or you can choose to use temperature

by changing mode from color to temperature

this will give you access to temperature controls

and you can input a value from 0 to 10 000

and there is a very useful color

temperature chart that you can use

so this basically takes a real world

accurate value and gives you an output of a color

color temperature

so you can use one or the other

and you can see that if you choose one

the color is grayed out

and if you choose color

the temperature is going to be grayed out

so if you choose temperature

and use any of those values from the chart and just say

let's say we will have warmer morning or in the sky

color so let's tap in 5000 and rewind our scene

if we go even lower let's do 3500 and re render it

it's going to give you that warmer look

and if you want more of a cooler blue

overcast or a mid day

type of lighting just go up

do 8000 and re render

so you can use one or the other

there is another option

to go between temperature and color together

so basically gives you access to both

you can change color and

temperature and you combine between the two

and it's almost like mixing

whatever temperature you set

and the color that you apply

I don't use this

I use one or the other

but I don't tend to use both of them at the same time

but if you choose to you can experiment with this

so let me go ahead and switch back to color

and just choose maybe a different

let's do a more yellow

and let's do a render

now it's a little bit too dark in here

so let's go ahead and increase our intensity

let's maybe go up to three

and re render

so those are the only values that you need to change

under intensity

properties to kind of get started with

your direction light

the other one we want to take a look at these shadows

so let's go ahead and

scroll down and open up the shadows

so shadows allow you to control the shadow transparency

softness and the quality of your shadows

so you can change the transparency

and I'm going to go ahead and enable my IPR

so you can see them real time

so it updates

so if you change the transparency

basically sets the opacity

for the cast chatters

so you can change that

and you can also do softness which gives you

a softer effect

to the cast shadows so right now our shadows are

way too hard

way too harsh and have a hard edge all around

so in order to get more soft effectum

just increase the softness effect

and you can see it's beginning to soften out actually

so you can push the slider up to 2

but sometimes you need to go more so let me go up to 5

and a lot of render

you can see it gets a little softer

and the beauty of this is is because

the way redshift works is the contact

right at the source is very hard

very hard edge

like you would usually see in real life

and then begins to soften as it

transitions away

and the further shadows usually have a softer edge

and wherever there is a contact

usually there is a hard edge

and if you is the middle closer

we see we could have a little bit of noise here

and usually you do have it in the shadows

so you can increase the samples

in order to remove some of that shadow noise

and that's where you apply it so 8 is usually very

small very low

but you can increase it to increase the shadow quality

now the sample count

applies only to the shadows

but there is also a sample quality

that you can increase for overall scene

and you could do this inside the render settings

if you open this up go to output

and you can increase the max sample count

so this will apply to the entire scene

shadows and everything else included

so this will also increase the quality of your renders

so if you have some noise

you can increase this value right here

on the unified sample and max samples you just go up

and I usually just

increase it in the power of 2

until I get good results

but if you want to just control it per light

and how the facts are shatters themselves

for only specific lights

you just you can

mess around with this value

and just keep increasing it

until you get good results as well

another useful property so when you select the light

every light will have

ability to turn off shadows

so you can kind of maybe focus on the light

or maybe you don't want the light

to have any shadows and maybe it's

some kind of a thick balance light that you are doing

and you're trying to affect the scene

but not have that

light cast any shadows

so this is where you turn that off

and if you want to turn off the

light completely and work on certain lights at a time

just come over on the general

and if you disable this

this will turn off the light

and then when you're done you can reenable it

and turn it back on

so this is very useful when you have many lights

and you just want to kind of focus in and just

tweak one light at a time and see what it does

so these are the main properties you want to control

and change for

your directional light

the second light we're going to cover

is the point light

so let's go ahead and insert it again right shift tab

right click on the first

icon that's yellow

which is going to be the fifth one down

and choose your point light

and again I'm going to go ahead and scale it

the scale for this one also does not matter

does not increase the intensity of it

just makes it larger in the viewport

and I'm going to position the render

your point light is a light bulb

it will emit light in all six directions up down

left right front and back

so let's go ahead and render with the default settings

bring up the render view and hit the render

and right away you're gonna see that this light

its intensity needs to be increased

so let's adjust our settings

come over to the attribute editor again

open that up and you're gonna have

pretty much

the same settings as you did for the directional light

the only property we need to adjust right now

is increase the intensity multiplier

so the directional light we had to bring it down to 1

but when we are working with a point light

we need to increase this

way higher

so if I bring it up I'm going to bump it up very high

and let's do it to 1000

go ahead enter and rerun the reframe

and it will take more of an effect inside that scene

the distance

that you have to slide next to our other objects

matters so the further it is away

the last effect

will take on some of the objects around it

so just give it a moment so it renders

so if I drag it away a little even further

it will shine less

so the position has a lot to do with the point light

the further it is away

the less effect it will take

to light the objects around it

and the closer is the more affectable and illuminate

the objects around it as well

let's go ahead and increase the intensity even more

so we can see a lot better

let's go up to 5000 and re render

so we have very similar settings as with it

for the directional light

we have our mode color or temperature

so let's just change our color

make it a little bit more blue and rerender

so you can change color you can change your intensity

you also have controls for shadows

and these are the same type of

controls that you saw on the direction light

you can adjust the softness to it

now we can really see

only bump it up even higher to 10,000

let's re render

so we have more shadows

and more intensity of the light

so you can increase the intensity

of how soft those shadows are

it's kind of hard to tell because it's very dark

and when I have one of these lights

but basically it

works the same way as the directional light

you will have some softness applied to the end of it

so

as it begins to taper up further away from the object

then you have your transparency

let me go ahead and enable IPR

so we can adjust that real time

and as well as

change the intensity

so IPR is really helpful

because you can see everything change

as you work on your scene

so let me go ahead and just bring this back down

and there is not that many more settings

we need to cover

because some of these are the same

you just have to know that the distance

of this direction light matters

so the further or

closer it is away from the objects

you will light it up more and affect the scene more

the one property we do want to take a look at is

to decay you don't really want to change this

the decay is basically

the time and the distance

at which the light begins to die out

and not affect the scene

so the distance of this the further it is away

there is a certain time in distance

that it affects the scene

before the light no longer hits

the further objects as it gets further away from them

so if you want to change the type you can

this will drastically affect

at which distance and how long that light

lives on inside the scene

so this is why you don't really want to change this

and inverse square

is the closest to real world values you can get

gives you a real

representation of what a light would do

in the real world

so I usually don't want to change this

but it's nice to know that it's there

and of course for some of the point lights

sometimes

you may want to disable shadows for some of them

so this is where the shadow control

becomes more important

than it is for the directional light

when you unable to disable it

so sometimes you just don't want a specific point light

to have any cast shadows

let's say you're just trying to

fake some bounce lighting or something else

so that really helps

and as well as you can turn it on and off

just like you can with the direction light

and again many of these properties will be the same

from light to light

so there'll be a lot of crossover

and that's pretty much it for the point light

the third light is a spot light

let's go ahead and insert it

and take a look at the properties

let me go ahead and make it larger

so we can see inside the scene again

for this third light

the size of it inside the scene when you scale it

and its effect and its intensity does not matter

just makes it easy for us to see it and select it

so a spotlight acts like a spotlight would

it has a single direction

a cone to produce the spotlight effect

and it

dies off at a certain distance from its light source

so what we need to do is we need to angle it first

in order to shine a

spotlight effect onto a scene

so I'm just going to go ahead and rotate it down

position it and move it

let's go ahead do a render

so just like the point light the intensity is very low

so when you adjust it

I'm going to go ahead and hit IPR

so we can see it in real time

and go to Attribute Editor

and the first thing we need to adjust is the intensity

so 100 is way too low

let's go ahead and just bump it up to 5,000

and as soon as you do that

you will begin to see it take effect

and actually for the spotlight

let's go even higher let's go to 25 thousand

it's kind of hard to see so I'm going to maybe

position it inside the scene more

and just kind of drag it so we can see better

so you can see it applies

a spotlight effect onto the scene

now just like the point light

the distance matters so the further you are away

and I might have to be a little further

it begins to fall off and die off

at a certain distance

so you still have

the decay just like you do for the point light

which is set to the same type

so that distance from the objects matters

so I'm not going to change the decay

I'm going to leave it at default

just so you know just like the point light

so I'm going to bring it back a little closer so it

intensifies and over minutes to see more and unzim in

now you have the rest of the controls just like you do

for the directional light and the point light

you have your on and off

you have your color and temperature

you can choose a different color

so let's just

change it to something else

you have your intensity multiplier

is what we just changed

you have your decay that we just covered and of course

you have your shadow controls

so nothing new here

there is a certain

set of properties

that is just applicable to the spotlight

and you can find it underneath this tab right here spot

go ahead and open this up

and you're gonna have three properties to control

the first one is the cone angle

so this will increase the effect

of the spotlight and make the effect of it wider

so the cone angle can be increased

to affect a larger area

and then you have two other controls for falloff angle

you have falloff angle and curve

so if you adjust this

you always have like a inner cone angle

for a softed transition

where the light begins

and where it begins to taper off

so if you decrease it it will give you a harder shadow

where the light begins

and there is no falloff angle at all

and you can increase it

and then you have the falloff curve

which controls the curve of the falloff

so I'll change it back to 1

so you adjust a cone angle

how wide do you want this to be

and then you adjust the falloff

of the effect

and then maybe after the fact

maybe you need to adjust the falloff curve

so just only three properties

to affect the spotlight and how

it looks inside the scene

and other than that

the rest of the properties are

pretty much standard for all the analytes

and you just adjust the color intensity

and then you come over here to the spotlight

area and adjust it for the spotlight

and then of course you can adjust the shadows

and usually you would want to adjust the softness

so that's why I keep coming back to the shadow area

because shadow

softness has a lot to do with

making more believable scenes

because you rarely have a very hard

shadow all the way around

so you do have to control some softness to it

to make them more believable

and the fourth light we're going to cover

is the area light

area light is a

more special light than the other three lights

as it has a few properties that the others do not have

so let's go ahead and insert that area light again

I'm going to right click on the icon

and insert the area light

the area light is the only light out of the 4

where if you scale the light

it will also change

its intensity in the area of effect

let's go ahead and render our frame

and you can see right away it's

taken effect but it's very small

and it's not that intense

and it isn't effect in a larger area

so we can do only two things

we can increase the size of the area light

or we can control its intensity

or we can do both

so let me go ahead and actually scale this light first

can I enable IPR

so we render in real time

hit R for scale and start scaling

and as soon as you do that

you can see that the intensity of the slide increases

I push it back

and just position it

and let's scale it again

the more I scale the more intense it becomes

I can also come over here and we can adjust intensity

open up the attribute editor

and change the intensity multiplier

let's say 500

so you have two properties you can control

the size to affect

more of your scene as well as the tensory multiplier

of course you have all the other

options here as well

which

we don't need to cover because you already know them

since we covered in other lights

now this area light has a direction that is pointing

and you can see that it has this line

this is the direction of the light source

where it's going to point

you can of course

rotate the light in addition to moving and scaling

and let me reset this back to 100

you will also notice that the area light has a shape

and right now we are looking at the shape

the light source where the light is coming from

and the larger you make it

the larger it becomes in the scene

and this light you can see

now if you want to change

not just the width and the height altogether

you can just adjust it and make it more narrow

make it wider

non uniformly

so this is great

for if you want to shine some light through our window

or maybe you're creating a specific light source

that has more of a rectangular shape

you can do this with an area light

now if you want to have the area light but

not want to see it inside the scene you can actually

disable this visibility of it inside the render

by coming over into the attribute editor

into the properties

open up the area property tab

this is where you have additional properties

just for the area light

and here you have visible

so when you turn this off

the light is still shining in effect in the scene

but you just don't see the shape of it

you can also make it by directional

which will shine in both directions

front and back

so you'll see it right here

in the back you will also have this light

as opposed to if you turn this off

it will just go into one direction

another useful property is you can change the shape of

this light so right now we're looking at the square

or maybe it is a

more rectangular light

depending on how you scale it

but right here under shape you can change it to a disk

sphere

cylinder or you can assign a mesh to it

so if I had the mesh inside the scene

I could just assign it and it will use that mesh

as the light source

and since I already have two objects right here

let's find something a little bit more interesting

let me create

a different polygonal primitive

let's do let's do a helix

let's make it larger

and I can assign this mesh

to eliminate the scene instead of the shape

whatever it gives me

so the way you do this is you select the mesh first

and then you select the light second

and then when you come over to the shape

change to mesh

actually it won't do anything right now

is because we need to link it

so the object needs to be selected first

the light second

and then you link

and then it will basically take

the mesh

that you assign to it and use it as a light source

and then when you want to unlink it just click unlink

with this mesh selected

so again the way you do this is

come over to the light

switch shape to mesh

then select the mesh first

hold shift to light second

click link

and now you have that mesh as your light source

very cool and very unique to the area light

and let me go ahead and unlock it

and let's change the back to rectangle

so the rest of the properties like I said

you have all the rest of the properties that

are the same across all other lights

you have color

you have mode for temperature or color

and of course you have shadow controls

and by default you'll notice that

the area light already has

soft shadows that it's producing

so you don't really have to set too much

in the shadow area

other than transparency

as you can see the other options are disabled

so Area Light is a great light to use

and of course in addition to other lights

when you combine them all to use together

then you can create more unique scene

depending on what you are creating

and the last part of the winter cover

is just a general overview of

just working with lights

how to delete them

how to rename them and how to even convert them

so of course you can have more than one light

inside the scene

we just covered them all one by one

but you can have multiple area lights

multiple spot lights multiple point lights

as well as mixing them all together

so you can take your light

and if you want to duplicate your light

you just simply select it and hit Ctrl d to duplicate

and in this case

I also duplicated this mesh so let's just delete them

let me go ahead and re enable IPR

so now you have a second light

maybe you want to insert a third light

but in this case maybe you want to have a

point light

go ahead insert it

scale it so we can see it

in this case it's not going to affect the scene

I may be positioning the back here change the color

to something else

and increased intensity because the point light

naturally is very

low intensity

and you can just combine multiple lights together

the only light you want to have one

of is the directional light

you should not have multiple directional lights

it's like having multiple suns

directional light is the only light

you should have one of

but the rest of the lights you can duplicate

and have as many as you need

to delete any light just select it and hit delete

and it will be gone

if you want to have your

light but you want to rename it

let's say I have this every light

let me duplicate it one more time

want to rename it just like the light

come over here into the top right here and it'll say

RS Area Light Shape 2

what you actually want to rename it is you want to

switch over to channel box

and rename it here

and use the channel box to rename lights rather than

that property that you saw there

and then here you can type in

area light and let's say it's a large room

I usually try to leave RS that stands for redshift

so that way I know I have a redshift light

and then I usually name it

sometimes I keep the name

of what type of light this is as well

maybe abbreviated but this is how you rename it

you can also rename it inside the outliner

open up the outliner

find the light

double click on and rename it here

and of course

you can delete your lights from the outliner as well

so select it and hit delete

and one more thing

is you can convert existing lights to

another type of light

I don't do this very often

because it keeps the same name

and it might even keep some of the properties

from the light you had before

so I don't like the way it does it but

you could still do this

so select the light go into the attribute editor

and if you come over here on the general

you have light type

right now it's set to area

you can convert it to any type of light

let's say spotlight

so you can see it converted it

but the problem is

that I don't like it keeps the same name

so you'll have to rename it right away

and also it will keep the properties that you have

so let's say if I had this set to 10,000

or maybe even more let's do 100,000 for spotlight

and then I have went ahead and converted to something

else such as

back to area light

it keeps the same intensity

so I don't I'm not a fan of doing this

and I just like to insert a light that I'm going to use

and not convert it

but you do have that option

and that is it

those are your 4 standard redshift lights

that you can use to create and light you seen with

and there are additional lights inside redshift

and they are right here

you have your portal light

I E

s light dome light

and sun and sky as well as if you go to redshift

under lights you have redshift physical light

so there are more than four

but these are your kind of

basic standard lights that you should know how to use

and I hope this tutorial was helpful

to get you started with the 4 standard

rudgeshift lights