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Class 12 Notes are in progress and are subject to change

Class 12 Outline

Discourse

Minimize Discourse

Midterm Review at end of class

Another site with manipulated phtotos

Copy 12digital from class to groups

Graphical Formats Chart

What you absolutely, positively need to know about image file formats
 - and also know why you need to know it.

Use EPS and TIFF for print publishing. Use GIF, PNG, and JPG for online publishing.

TIFFs (and EPS)

 JPEGs GIFs
  • TIFF (Tagged Image File Format) is the most widely supported graphics file format for printing.
  • Although TIFF is not suitable for viewing in Web browsers, it has other strengths: it is a highly flexible format which is supported by numerous image processing applications.
  • Figures for publication should be submitted in high-resolution TIFF format.
  • They are generally LARGE files.
  • Minimum requirement for publication is generally 300 ppi.

 If you want to know more about TIFFs

 

 

 

  • JPEGs are usually better for reproducing photographs.

  • JPEG format, with its support for 16.7 million colors, is primarily intended for photographic images, particularly for use on the web since the files are compressed and download quickly.  

  • When you save an image as a JPEG file, not all of the information in the original image is preserved. This is because if it were, the file size would be very large. JPEG removes some of the information to keep the file size small.

  • Even though the files are compressed, they can still support 

  • JPEGs cannot be animated. 

  • They are small to medium files, generally 72 ppi.

If you want to know more about JPEG

 

  • GIFs (either "jiff" or "giff") are usually better for reproducing clean-lined simple designs with strong flat colors such as logos or drawings.

  • GIF files support a maximum of 256 colors, which makes them practical for almost all graphics except photographs.

  • The GIF format supports transparency and is compressed.

  • If you are using original artwork that has only a few colors, like logos, bullets or clip art, GIFs works better.

  • They can be animated, made with transparent backgrounds, and interlaced.

  • They are generally SMALL files.

If you want to know more about GIFs

 

 

 

 

What format is this graphic? How do you know??

Hands-on:

 

Homework:

Part 1 - Digital Photos, Pixels, Resolution and File Size
Read these online explanations, then answer the questions in the 12digital homework file

Part 2 - SUMMARY: Social, Legal and Ethical Issues on the Internet

Read this blog entry from Radical Parenting - it presents a case for banning Photoshop as a tool for image manipulation in popular media. Do you agree? Write a new blog entry and address some of the reasons the author gives for banning Photoshop and support or defend your position. Who wrote the Radical Parenting post? Does the author have a hidden agenda? Is this opinion-based or research based? Here is the concluding paragraph to get you started thinking:

"These 7 main reasons make it reasonable to ban photoshop in ads, etc. Photoshop exploits perfection, something that is non-existent. There really is no point of exploiting perfection if it doesn’t exist. No matter how many photoshopped women there are in magazines, etc, all women and teen girls are beautiful in all shapes, sizes, and forms. To embrace what true beauty is, companies need to stop using photoshop and promote women for who they really are without modifying any feature."

You might also want to watch this video -

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