Photoshop
New Images
Review Answers
Answers
- What are the five key decisions involved in creating a new image?
Name of the image, width, height, resolution, and the colour space or mode. - What is the file extension for Photoshop files?
.psd - Why edit images in 24-bit colour depth if ultimately they will be 8-bit images on the Internet?
Because editing your images in 24-bit colour allows you to have a greater number of colours available which means the image is not as likely to lose colour information and appear lesser in quality. - Why would you use the Magnification/Navigation controls?
The Magnification control is used to zoom in on a portion of an image and the Navigation controls allow you to move the preview of the magnified image around to see different parts of the image. - What does double-clicking the Zoom tool do?
Double-clicking the Zoom tool automatically sets your image to 100% magnification. - What happens when you hold down the space bar in Photoshop while the pointer is over an image window?
Holding down the space bar makes the Hand tool available no matter which tool you are currently using. - What is a snapshot in the History panel?
The thumbnail image that appears in the History panel represents a snapshot of that image at a particular moment in time. - What are states in the History panel?
A record of all changes made to the image or snapshot. - If you delete a History state that has other states below it, what happens to those states?
The states below will disappear unless you have turned on 'Allow Non-Linear History'. - Does the image window display the physical dimensions of an image?
If you hold down the Alt (Option) key while clicking on the document information section, a pop-up window will display it. - How is opening a vector file in Photoshop different from opening a bitmap file?
The Rasterize Generic EPS Format dialog will be displayed and you must set the width, height, resolution and colour mode you want to work in. Once you set these options and click OK, Photoshop will convert the vector image to pixels. - What does anti-aliased mean?
The edges of a graphic will be smoothed out by filling the edges with semi-transparent pixels of colour and colours that meet will be slightly blended. - What three attributes of an image can be changed using the Image Size dialog?
Pixel dimensions, document size (print size), and resolution. - What is the redistribution of pixels as a result of changing the pixels dimensions called?
Resampling. - What is an interpolation method?
It determines how resampled pixels will be redistributed when an image is resampled. - State which interpolation method is the most accurate: Bicubic, Bilinear, or Nearest Neighbour.
Bicubic - What does the Document Size section of the Image Size dialog refer to?
The size an image will be when printed. - Name four ways that you can restore an earlier version of your image.
Undo, Step Backward, and Revert commands as well as using the History panel. - Which command allows you to make a copy of your image in which you can retain separate layers, masks and alpha channels?
Image > Duplicate. - What tools are available to store comments within a .psd file?
Notes and audio annotations. - What is rasterizing?
Converting vector data to pixels.
Bonus Answers
- What could be wrong if in the Open dialog box you do not see the file name of the image that you want to open, given that you are in the correct folder or directory?
You may have to select All Formats from the drop down menu at the bottom of the Open dialog box. - Describe why displaying the scratch disk sizes in the new image window may be useful.
You can then see if you are running low on hard disk space to perform editing on your images. - How can you hide the Photoshop interface completely and view your image alone against a black background?
Activate Full Screen mode and press the Tab key to hide the panels. - Name four ways to set the magnification of an image so that it fills the available work space.
Use the View > Fit on Screen command, use the keyboard shortcut Cmd-0 (Ctrl-0), click the Fit On Screen button in the Tool Options bar when the Zoom tool is selected, or double-click on the Hand tool. - When scanning an image that you will be editing in Photoshop, what is the recommended resolution for scanning?
Generally, set the scanner resolution to twice the resolution that your image will be. - How can you display two copies of your image document so that you can view them at different magnifications while you're editing?
Use the View > New View command to open another view.
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