Lesson 2: Acquiring Images for Web Graphics
In this lesson you will learn about different methods for acquiring digital
images to work with in the creation of web graphics. Depending upon the resources
available at your location, you will explore the use of scanning, digital
cameras, and use of the Internet to acquire images.
In addition to capturing images using a scanner and digital camera, students
will also be directed how to acquire images through various resources on the
Internet. The instructor should remind students that images on the web are
protected by copyright law and cannot be used unless written permission is
given by the owner of the copyright, or the image is in the public domain.
Students will be directed to a number of sites that offer royalty free or
public domain images for educational purposes. In addition, students will
be directed to search for commercial stock photography repositories using
an Internet search engine.
At the completion of this exercise, you will be able to:
- use the concepts of pixels and resolution to appropriately size images
for web pages
- understand how file size and bandwidth limitations influence the use of
In the following activities you will collect images using a variety
of methods and sources. Save all images in your images
- Your instructor will demonstrate how to acquire digital images through
scanning and uploading pictures from a digital camera, depending upon the
resources available at your location. If access to equipment is available,
you will acquire one image from each source.
The images will eventually be used to make a mini web photo album where
the maximum picture size is 450 x 450 pixels. When scanning images or setting
the quality settings on your digital camera, remember to think about the
total number of pixels you are capturing and what final size you want the
image to appear on the web page. It is a good idea to capture an image that
has more pixels than you need, since a graphics program can be used to make
the image smaller, but can't make the image larger without lowering the
- The Internet provides a terrific source of images that can be used for
creating web graphics. Remember what you learned about copyright and images
on the Internet though. Images on the web are protected by copyright law
and cannot be used unless written permission is given by the owner of the
copyright, or the image is in the public domain. While images on the Internet
are protected by copyright law, there are many sites that make images available
for your use. There are many stock photography sites that provide images
for a fee. There are also certain sites that allow the use of their images
for personal or educational use without a fee. Make sure to read the copyright
restrictions on these sites carefully. United States government websites
are a good place to look for images that are in the public domain and do
not have copyright restriction against their use. Use the following sites
to find an image and download it for use in your web photo album.
After you have looked at these sites, try searching on your own for sites
that offer stock photography, royalty free images, images for educational
use, or public domain images. Remember to look at the copyright requirements
and use restrictions for using images on these sites. Share any good sites
you find with your class.
- You should acquire at least three images from activities 1 and 2 combined.
You will use these images in the next lesson.
If you were unable to acquire three image because you did not
have access to the necessary resources, your instructor may have images to share.
- digital camera
- Internet access and ability to download image files
Make sure that you have acquired at least three images and have saved the
files to your images folder. You will be using these images
to complete the following lesson.
Once you have three images, proceed to Lesson 3.
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Permission is granted to use these materials in whole or in part for
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This product was created with support from the National
Institute on Disability and
Rehabilitation Research of the U.S. Department of Education (grant
#H133D010306), and is maintained with support from
the National Science Foundation (grant #CNS-0540615). The contents do not
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