All language subtitles for 13 - Intro to File Formats

Before we continue our discussion
on external editing preferences,

we need to build an understanding
of some key terms.

Since the start of this course.

We've already tossed around
a number of file format types.

We referenced.

JPEG files, TIFF, RAW and DNG.

But what do all these mean
and why are there

so many?

Firstly, it's important to understand

that your digital image file
is composed of bits of data.

A wider depth of colors in your photos
equates to more data

and consequently a larger file size.

To prove this point,
I'll do a quick demonstration

in Photoshop.

I still have that image open
that we worked on earlier.

This is a full color image.

I'll go ahead and save this
file on my desktop as a JPEG

and I'll call this sample one.

Change the format to JPEG

for the quality.

I'm setting it to maximum.

Now I'm going to save this exact
same file again,

but before I do, I'm going to convert it
to black and white

and I'll save it as sample to

format again as JPEG

and the quality again is maximum.

Now you can see the two files here
on my desktop sample one in sample

two one is full color,
the other is black and white.

That is the only difference
between these two images.

Let's see the file size

of the full color image.

We can see that the file size

here is 2.9 megabytes.

Now let's see the file size

of the black and white image.

This image is only 1.6 megabytes.

Since black and

white photos consist of a smaller
color spectrum.

The file size is also smaller.