Saturday, 30 April 2016

Learning Basic Photoshop FIRST TIME Chapter 5


Chapter 5: Creating New Images - End
• Importing Existing Images into Photoshop
• Review Questions


Importing Existing Images into PhotoshopVery often you will work with images that have all ready been created, such as images of company logos, scanned images, and images taken with a digital camera.  Furthermore, you might need to make further changes to an image you have already created and edited.  To import or load existing images into Photoshop  select File/Open.  The Open dialog box appears.


Open dialog boxThe Open dialog box contains standard file opening options such as controls to navigate to particular directories, create new directories, etc.  For the purpose of this course, navigate to the photoshop6xfiles folder you’ve installed on your system.
For Files of type: with Windows, or Format with Macintosh select All Formats to make the Open dialog box show files of all types.  {Click} the drop-down arrow and have a look at the list of file types or formats Photoshop  supports.  Recall that file types are different kinds of bitmap or vector files that have developed and evolved since the birth of digital imaging.  Because Photoshop supports so many file formats your editing options are almost limitless.
Navigate your way to the chapter003 {Double-Click}monkey or {Click} monkey once and then {Click} Open.  The Monkey  Image Window  opens.
You now have an imported image file.  Let’s examine some of the things we can do and certain things that happen when you create or import an image into Photoshop .


Image ModeJust as with a document you have created, a document you have imported contains the name or title of the image, the current magnification level, and the Image Mode  in the Image Window  Title Bar.  Image Moderefers to the color space the image is operating within.  RGB is the color space of choice for Internet images because RGB is also the native color space of your computer and monitor.  It is important to realize that an image designated by Photoshop  as being in RGB mode has a 24-bit color depth.  Recall that the higher the bit depth of an image, the larger the file size.  Why edit and manipulate your images with a 24-bit color depth if ultimately you might only export the image with a bit-depth of 8?  If you work in a bit-depth of 8, many of Photoshop’s advanced features, such as using Filters , resizing images, and re-coloring images are either not available or do not operate effectively.  By editing or manipulating your images in RGB mode, you give yourself the greatest range of creative options and the greatest level of accuracy.  Of course, ensuring that your display is currently set to 24-bit depth is also essential.  You can always reduce the bit-depth when you have completed editing your image.


Select the Filter Menu  Item and drag the mouse over the available items.  As you rest the mouse pointer over each item a pop-up box appears with a list of sub-items.  You’ll notice that currently, all the Filters  are available.  Select Filter/Distort /Glass.






Input “8” for Distortion, “5” for Smoothness and selectFrosted from the Texture  drop down menu.  {Click} OK.  The image of the Monkey now appears as though you are looking at it through Frosted Glass.  Remove the distortion.  Select Edit/Undo  Glass.  Filters  are covered in depth later.

Nextselect Image/Mode /Indexed Color .  Accept the default values of the Indexed Color dialog box and {Click}OK.  Notice that the Image Window  no longer indicates or displays Image Mode.  Any bit-depth below 24, except for Grayscale  (which displays Black), is indicated by the absence of an Image Mode indicator.  Now attempt to apply the Glass Filter to the image as you just did.  You’ll notice that none of the Filters  are available, hence the need to edit your images in RGB Mode.  Close the Monkey image by {Clicking} the Close box at the top right corner of the Image Window.  When prompted if you desire to save changes to the document {Click} “No.”  Open themonkey image again to explore Photoshop ’s Magnification  controls.
Magnification /Navigation ControlsTo modify, edit, and create images you will need to increase and decrease magnification for accuracy.

Navigator Palette
{Click} the Navigator tab in the Navigator Palette Group .  You will notice a red box surrounding a thumbnail of the Monkey image.  The image in the Image Window  you have currently selected is displayed in the NavigatorPalette.  When the box surrounds the entire image it signifies the current magnification level is at 100%.




At the bottom of the Navigator Palette, you can see a box that displays the current magnification level.  {Double-Click} to manually input a different magnification level.
Beside the input box is the Zoom  Out, Zoom Slider, andZoom In controls.  {Click} the Zoom Out or Zoom Inbuttons to decrease and increase magnification in preset increments.  {Click} and drag the Zoom Slider back and forth to decrease or increase magnification.

As you use the Navigator controls, you’ll notice the View Box (red box) on the thumbnail decreases and increases in size depending on the current magnification level.  When you pass the mouse pointer over the View Boxyou’ll notice the cursor changes to a Hand icon.  {Click}and drag inside the View Box to move the View Boxaround the thumbnail.  As you do so, watch the Image Window .  The image moves around within the Window as you move the View Box.  When passing the mouse pointer outside of the View Box but over the thumbnail, the pointer changes into a Pointing Hand Icon.  {Clicking} on the thumbnail moves the red box to the area you just clicked.  The image adjusts in the Image Windowaccordingly.


The Zoom Tool 
Alternately you can use the Zoom Tool on the actual image to adjust magnification.  {Click} on the Zoom Toolto select it.  {Click} and drag over the area you desire to magnify.  Pressing the [ALT] key changes the Zoom Toolto a Zoom Out Tool.  Notice the “+” sign that appears in the center of the magnifying glass icon by default.  Pressing the [ALT] key changes the “+” sign to a “-“ sign. {Click} on the image to Zoom Out to predetermined levels.  {Double-Clicking} the Zoom Tool restores magnification to 100%.
The Hand Tool    As an alternative to using the Navigator Palette to move a magnified image within the Image Window  you can use the Hand Tool.  Magnify the Monkey’s face.  Select theHand Tool.  {Click} and drag over the image to move the image within the Window, effectively moving other parts of the image under the virtual magnifying glass.
The History Palette
The History Palette  is effectively Photoshop ’s Undo  manager.  Many applications or programs feature multiple levels of Undo, meaning you can discard or erase a series of modifications or changes you have performed.  For instance, in a Word Processor you can repeatedly{Click} the Undo button until you’re left without any content at all after having input a few paragraphs.  Similarly in Photoshop, you can use the History Palette to Undo a series of modifications you have made to an image.





The SnapshotLike the Navigator Palette, a thumbnail of your image also appears in the History Palette .  This thumbnail is called aSnapshot .  The Snapshot is a record of the image complete with all the modifications you have performed on it.  Initially of course, upon opening, the image has not yet been modified.  Having performed a number of modifications, you can create new Snapshots to effectively create a record of the latest version of your image.



The StateBelow the Snapshot , Photoshop  records or logs each of the modifications you make to an image.  Each record is called a State.  By default, the number of States is set to 20.  You can increase or decrease this number by adjusting the  History State s field in 

the GeneralPreferences .  {Click} on the Black Triangle at the top left hand corner of the Palette to access the Menu .  EachPalette has a number of options you can access by{Clicking} on this Black Triangle.  In this case, selectHistory Options .



Automatically Create First SnapshotChecking Automatically Create First Snapshot  creates a record of the image before any modifications have been performed.  That way, at any point in the editing process, you can easily return to the image in its original form.


Automatically Create New Snapshot  When SavingSelecting this option will automatically create a Snapshot of your image when you save it.


Allow Non-Linear HistoryAs you make modifications to the image, the HistoryPalette  makes a record of each modification building from the bottom up.  The last State, or the State at the bottom of the History Palette therefore represents the last modification you made.  Each modification or State is related, meaning if you discard or erase a State with other States following it in the list, all the States that follow are also erased.  Check Allow Non-Linear History to keep States that follow deleted or modified States in the stacking order intact.  You can use these States with the Art History Brush  detailed in further chapters.



Show New Snapshot  Dialog by DefaultSelecting this option will automatically prompt you to input a name for your new Snapshot , even if you create it using the buttons at the bottom of the panel.

Select the Airbrush Tool .  {Click} and drag over the Monkey image and paint over it as you wish.  Select thePaintbrush Tool.  Switch or swap the Foreground and Background colors by {Clicking} on the Swap Arrow Icon.  Paint on the Monkey image as you wish.  Now examine the History Palette .  You’ll notice that below the thumbnail of the Priest are three States: Open, Airbrush, and Paintbrush.


If you don’t like the modifications you have made you can get rid of them by {Clicking} and dragging the State over the Trashcan icon, then {Release}, or you can {Click} theState you want to erase and {Click} the Trashcan icon.  Alternately you can {Click} on any of the States to make the States that come after it inactive.  For instance, if you{Click} the “Airbrush” State the “Paintbrush” Statebecomes inactive, indicated by color.  Gray indicates theState is inactive, white indicates the State is active, and green indicates the State is selected.  Discarding or erasing a State that has other States below it in theHistory Palette  will erase those States as well.
If you have discarded your Airbrush and Paintbrush modifications, make them again.  Having made your modifications {Click} the Options  Triangle (the Black Triangle at the top right corner of the Palette) and selectNew Snapshot .  The New Snapshot dialog box appears.




You can name the New Snapshot  and select the source of the New Snapshot with the From drop-down menu.  However, the options in this drop-down menu cannot, at this point be understood until we have covered Layers .  For now, leave it at default, Full Document.  A newSnapshot is created in the History Palette  complete with all the modifications you have performed.  If you didn’t name the Snapshot initially, simply {Double-Click} the white area beside the Snapshot to initiate the RenameSnapshot dialog box.  Type in any name you desire.  Now you have two Snapshots, one of the image as it was when opened and one of the image after your modifications.  You can use these Snapshots as starting points to make more modifications by simply {Clicking} on the desired thumbnail and making your modifications as you normally would.

At any point, you can also create a new document or a new Image Window  with the latest modifications you have made.  Simply {Click} the Options  Triangle in theHistory Palette  and select New Document.  A new Image Window will open.  By default, the name of the newImage Window will be the name of the Tool you last used to modify the original image.  For instance, if you used the Paintbrush Tool last the new Image will be titled “”Paintbrush.”  When you save the image you can change the name.
Close all images by {Clicking} the Close Box at the top right corner of the Image Window .  Do not save changes to the monkey image.

Review Questions
  1. What are the five key decisions involved in creating a new image?
  2. Why edit images in 24-bit color depth if ultimately they will be 8-bit images on the Internet?
  3. Why would you use the Magnification /Navigation controls?
  4. What is a Snapshot  in the History Palette ?
  5. If you delete a History State  with other States below it what happens to those States?




0 comments:

Post a Comment