Graphics Programs Reference
In-Depth Information
Self study
1
Using the Frame mode in the Timeline panel, create a text layer and experiment with
animating its position so it moves around your document.
2
Using the Timeline mode in the Timeline panel, experiment with animating the
ef ects on a layer. Animate a drop-shadow so it moves over time.
Review
Questions
1
What is more important to note in an image size to be used on a web page, pixel
dimensions or resolution?
2
When would you need to save a video i le with an alpha channel?
3
Name four web image formats and provide an example of when to use each one.
Answers
1
It is more important to have the pixel dimensions of an image accurate, rather than
the resolution. As a web and video creator, you would only use the top section of the
Image Size dialog box.
2
An alpha channel is a way for applications to understand which parts of your video are
transparent and which are opaque.
3
a.
The JPEG format is used for saving photographs and other continuous-tone imagery.
b.
The GIF format is used for saving limited-tone imagery (images with lots of solid
color) such as logos and other graphics. GIF supports transparency and animation.
c.
The PNG format is used for saving either photographic imagery or images with a
lot of solid color. It can also support transparency in varying amounts.
d.
The WMBP format is used for saving images for mobile content devices, such as
cell phones.
