Guys in this lecture I would like you to focus on the fall of the radius and full of distance and acquire
a great understanding because they will help you a lot in doing your visual effects and your motion
graphics.
And you know including some very interesting lights.
So please raise me open the composition to fall off.
And over here we have a single light.
If you notice I remove the ambient light only one single light.
And this is what I would like you to do first before take the Confederacy to zero OK and take the fall
off to none and take the radius to zero and the fall off distance to zero.
And let's not exactly what we have.
We have a light here that will never fall off.
You'll notice if I take it backward it will never fall off.
In fact it will stay on all the time.
It has no falloff.
And it depends on the cone angle.
For the light.
So now you have a nice spot light over here.
So what exactly is a falloff.
Imagine yourself in a car door or in a tunnel and you have a flashlight in your hand.
And this tunnel or Khoder is really really long infinite.
If you point the flashlight straight towards infinity after a certain distance the light start falling
off or disappearing.
This is the falloff.
Now I put the falloff on and we notice the light will never you know go off or we never fall.
Let's try something else.
If you come to fall off here you have three options.
The Moth and the inverse square let's go for the smooth now and the light completely disappeared.
Why is that.
Because the radius of the light is set to zero.
It's Englis a bit the cone.
OK.
And start increasing the radius pressure shift to increase pretty fast.
Here you are.
And at certain point the light start you know coming into existence if you like.
And this is a pretty sharp light the corner of feathering is zero.
This is the cone of the light not the cone of the spotlight.
This is the cone of the spotlight and this is the cone of the light.
You can imagine this in 3-D it's like you take a lampshade that is open from under and you stick it
to the ceiling.
Now from the ceiling to the ground and is going to give you a kind of circle on the ground.
This is the corn starch from here.
That's the ceiling.
And then it gives you this cone on the floor.
So this is the concept of the radius.
If you increase the radius of course the light increases in distance.
This is the radius over here.
OK.
If you increase it the light is gonna be bigger.
As simple as this this light is not falling off and it's very unusual.
But still remember guys you can use it in very many visual effects and motion graphics.
Let's say now the falafels stick the radius a bit behind.
Just to put it over here.
OK.
And then start working on the fall off.
If you start increasing the falloff this will be the distance from the end of the cone to where or how
long it's going to take for the light to disappear.
This is the fall distance.
So it's from zero and you grow it and start falling off.
But it's very natural in after.
You notice this is the distance that the lights start falling off meaning the intensity of the light
is going to be you know diminishing until there is no more light.
Look how natural it is over here.
If you make it even bigger here you are you have quite some lighting here and not is that the distance
is increasing and the intensity is inverse the distance and it's diminishing and becoming totally over.
So this is the concept of falloff for small radius and full of this is.
Let's put them back to 0 0 to the radius and to Full of distance to zero and go to the option of inverse
square clamped.
He said we don't have a light.
So let's try the radius here.
If you increase the radius not just what's going to happen here the light starts with a very high intensity
and immediately after this intensity is thought of falling off.
OK let's take it behind and see exactly what happens.
OK.
So the light it takes very long for it to disappear.
And actually at a certain point I'm going to shift.
It's going to disappear.
That's very far distance.
Now I'm going to bring it back in.
You do.
While I'm pressing shift.
OK.
So this is the inverse square.
It's very bright.
And you start falling off your not is that the use of the fall off distance becomes redundant and use
this here because the light is falling off and at certain point it will disappear of course.
So if you play with the fall off distance is not going to make any difference at all.
Now it's up to you how do you want your life to be.
You have this moth with the fall off distance.
OK I'm going to give it some or you have the clamped or inverse square if you like where it's very bright
here and it's falling off well it's option here even the non has its own applications depending on the
visual effects and the motion graphics is that you want to create most of the time they ask me OK how
do I create a disco light.
Well this is the disconnect.
As simple as this fact I'm going to take the fall off down.
OK and let's take the cone down.
And here you are.
You have it kind of does collide.
Of course you need to adjust.
I'm just showing you this is a nice disco light.
It moves around depending where you want it.
And you can change the colors.
Put them all kind of close and you have very nice light there are very many movies that there were no
disco lights and they added the disco lights in after effect and really you can get fantastic results.
OK guys.
So this is about the fall of the radius and the fall of distance.
I hope you got the concept 100 percent and I hope you will use it all the time and make the right decisions
of what kind of fall off you want.
Thank you.
I will see you in the next election.