- [Narrator] In this video I've rendered out the exact
same scene two different times.
Both using the .png file format.
You can see here one has a white background
and the other has a gray background.
The white background actually means there's no background.
It's a transparent background and that is added by
selecting the alpha channel.
So if I jump back over here to visualize,
you can see here if when I go to an output
under render this little option right here
the include alpha channel under the .png file format
will remove that background for you.
Let's go ahead and cancel out of this.
Let's jump over here to Photoshop, I'm going to go ahead
and open up those files on my desktop.
Exercise files in chapter 5.
5.3
There's the two files. That one and that one.
We'll select them both and click on open.
Alright, so there's my very first one you can see.
Because I included that alpha channel
there is no background.
Which makes it really handy to work with.
The other one here has that gray background
and if you wanted to take your object
and put it into some other type of publication or website.
Something like that.
A lot of times you want to have like a pure white background.
Or maybe you want to have it on some other color.
And the easy way to do that, again, is including that
alpha channel.
Then I come over here and select some type of a tool
like a rectangle down here and choose what color I'd like.
So if I'm using only web colors
I want to use a white background.
I can then just draw a white background here,
which covers it over and then just reorder these
in the list over here.
So there's my object directly on a white background.
If you want to be more fancy
and you prefer to have a red background
no problem, let's go ahead and create a rectangle,
cover that over and then put this one in front of there.
Or that one behind there and now you have
your object on a red background.
So, very easily to switch backgrounds, colors, transparency.
Whatever you want to do.
You can do that all by including that simple alpha channel
inside of the render alpha window when you save it as.
So definitely recommend doing that cause it does make things
look a lot nicer and cleaner
when you have a final rendered image
with nothing in the background.
If you do want to put on a color background.
Or something like that.
It makes it really easy just to drop it on top.
If you don't have Photoshop its okay.
Any graphics program will generally work
with those type of files
and will allow you to lay it out however you please.