Photoshop
Saving Files
Review Questions
- List three situations where you would use the Save As command instead of the Save command.
- What is the keyboard shortcut for the Save command? Save As?
- Which image file formats support alpha channels?
- If you use a later version of Photoshop to open a Photoshop 5.5 file that contains type layers, what will happen to the type layers?
- Why should thumbnails or image previews not be saved with images destined to be displayed on the Web?
- What does optimizing an image mean?
- Regardless of which viewing option you choose in the Save for Web & Devices dialog, what two items will always appear in the preview area?
- What does the 4-Up view in the Save for Web & Devices dialog contain?
- If an optimized view displays the text "60 quality", what file format is being displayed?
- When saving a file as a JPEG, what will the Matte option do?
- When are the Progressive and Interlaced options best used?
- What is multilevel transparency and which file format supports it?
- Give two reasons why using PNG-24 on the Web is not recommended.
- How are the GIF and PNG-8 formats alike?
- When a colour table has been generated, how can you tell which colours are Web-safe?
- For GIF and PNG-8, what does the Matte option do if the Transparency option has been enabled? How is this useful?
- What is the purpose of dithering?
- A colour table is another term for what?
- What is the Colour Reduction Algorithm menu used for?
- What is the difference between the Perceptual and Selective colour tables and which is the default option?
- What is the maximum number of colours supported by the Web colour table?
Bonus Questions
- What Save for Web & Devices option would you use to convert some of the colours in a colour table to Web-safe?
- What are the four ways you can generate a colour table or index for an image prior to (or while) saving it as a GIF?
- Describe how the Remember option works in the Save for Web & Devices dialog.
- Which type of image will create a smaller file size in the GIF format: one with vertical bands of colour or ones with horizontal bands?
- What compression method is used in the PNG format?
- Which file format can compress images at ratios between 10:1 and 100:1?
Review Answers
To help you determine if you are on the right track, the answers to the Review and Bonus questions have been provided. Do all the work on the questions page before you take a look at the answers.
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