Tour and Quizzes #3

Quiz- Chapter 9

1. cmyk would be used to print a full color image.
2. rgb is used for graphics on the web.

3.  indexed color is used on the web, therefore rgb would be used.

4.  256 colors or less are used in a graphic using the index color mode.

5. the bit depth of the monitor is more important than the pixels per inch of the image when it comes to resolution.

6.  an eight bit monitor can display 2⁸ or 256 colors per pixel

7.  A twenty four bit monitor can display 2²⁴ or 16.7 million colors per pixel.

8.  No, if you have an 8 bit monitor you will not see the full color range of a 24 bit image

9.  A 16 bit monitor can display 2¹⁶ or 65,536 colors

10.  If you set your monitor to a very high pixel count, it will cause each pixel to get smaller,  you will be looking at the same image but everything will be crammed into a smaller space and therefore look smaller.

11.  Some monitors can display more colors when the pixel count is smaller because is takes less memory since let bits of information are being sent to the screen.

12.  51:153:0

13.  339900

14.  20/60/0

Self Guided Tour of the Web- Chapter 11

Find an example of each of these graphic items. This tour includes concepts from both the color and the graphic definitions chapters.

A graphic or background with colors that dither.

http://www.armaghplanet.com/

An interlaced GIF image. How do you know it is interlaced?

http://wp.netscape.com/assist/net_sites/impact_docs/e.html

I can’t really tell by looking at it but I went to a site on interlaced GIF images and this was an example of an interlaced image.  I was expecting to see different parts of the image enter at different times.

A JPEG image. What makes you think it's a JPEG?

I think the camping image is a Jpeg because it is a photograph that has many colors in it and it looks very good.

http://gorp.away.com/gorp/activity/camp.htm

A graphic with text that is not anti-aliased, or a graphic image that is itself not anti-aliased.

http://webpages.charter.net/roamer/camping.html

http://www.anysllum.com/

A thumbnail image that is linked to a larger version of the same image. Did the designer tell you how big the larger file is?  The designer did not tell me how big the larger file was.

http://www.reserveusa.com/

http://www.anysllum.com/

An image map. Did the designer include an alternate navigation bar in case the image map wouldn't work on your browser, or in case you are browsing with your graphics off?  An alternate navigation bar was not included.

http://www.minsocam.org/MSA/K12/uses/bedroom.html

A graphic file that takes so long to download you don't have the patience to wait for it (unless you have a very fast connection so you don't notice).

https://ecampus.phoenix.edu/content/eBookLibrary/content/eReader.h

http://www.anysllum.com/

A useless graphic that doesn't add to the content, the communication, or the aesthetic value of the page.

http://www.ridertown.com/

What is that weird thing coming down the left side of the screen???

Turn off the graphics in your browser. Go to some new pages you haven't seen yet. Are there alternate labels that tell you what the unloaded graphic is? If the unloaded graphics are links to other pages, are there alternate labels that tell you where the link will take you?

Keep your eyes open for progressive JPEGS. You should be using a current browser.

Chapter 10 Quiz

1. This image would be better saved as a Jpeg because there are many gradation of color.  Jpegs are 24 bit graphics which means they are capable of using 16.7 million colors.
2. This image would be better saved as a gif since it only needs one color.  Indexed colors can be reduced down to the minimum number of colors needed to make the file size smaller and therefore the image will load faster.
3. This image would be better saved as a gif because there are few colors or color gradations
4. This image would be OK being saved as a Jpeg (because of the shadowing behind the letters) if it was being put on a white background where the square white box the graphics were in would not show up.. If the background were any other color, I would save it as a gif and make the white background transparent.
5. B.  Unlimited color is NOT an advantage of a gif
6. B  Jpegs are not lossless.  They do lost quality when compressed.
7. B.  Anti aliasing makes the file size larger not smaller
8. alt labels are good to used incase someone had there graphics turned off, they will see what they are missing.  Also a visitor will wee the alt labels as the page loads so they know what to expect.
9. It takes 2 separate graphics files to use a thumbnail to larger image concept.