Chapter 8 CS6 - Revision history

Michael: /* Download Materials For Chapter 8 */

2013-02-28T21:46:53Z

Download Materials For Chapter 8

Michael: /* Download Materials For Chapter 8 */

2013-02-28T21:43:36Z

Download Materials For Chapter 8

Michael: /* Download Materials For Chapter 8 */

2013-02-28T21:43:02Z

Download Materials For Chapter 8

Robin: /* Exercise 1: From the camera to the computer */

2013-02-24T22:10:10Z

Exercise 1: From the camera to the computer

Robin: /* Exercise 1: From the camera to the computer */

2013-02-24T22:07:50Z

Exercise 1: From the camera to the computer

Robin: /* Exercise 2: Minor adjustments to the original file */

2013-02-14T21:32:20Z

Exercise 2: Minor adjustments to the original file

Robin: /* Exercise 2: Minor adjustments to the original file */

2013-02-14T21:32:03Z

Exercise 2: Minor adjustments to the original file

Robin: /* Exercise 4: Adjusting the histogram in Levels or Curves */

2013-02-14T21:13:16Z

Exercise 4: Adjusting the histogram in Levels or Curves

Robin: /* Exercise 4: Adjusting the histogram in Levels or Curves */

2013-02-14T20:45:31Z

Exercise 4: Adjusting the histogram in Levels or Curves

Robin at 19:19, 14 February 2013

2013-02-14T19:19:33Z

@@ Line 1: / Line 1: @@
 =Download Materials For Chapter 8=
-For this chapter you can use your own digital image in RGB color mode, or you use our file: [http://wiki.digital-foundations.net/images/workfiles/Fig08_rgbimage_CS6.jpg Fig08_rgbimage_CS6.jpg]
+For this chapter you can use your own digital image in RGB color mode, or you use [http://wiki.digital-foundations.net/images/workfiles/ch08-files-CS6.zip our file]
 =Chapter 8: Tonal Scale=

@@ Line 1: / Line 1: @@
 =Download Materials For Chapter 8=
-For this chapter you can use your own digital image in RGB color mode, or you use our file: [Fig08_rgbimage_CS6.jpg | http://wiki.digital-foundations.net/images/workfiles/Fig08_rgbimage_CS6.jpg]
+For this chapter you can use your own digital image in RGB color mode, or you use our file: [http://wiki.digital-foundations.net/images/workfiles/Fig08_rgbimage_CS6.jpg Fig08_rgbimage_CS6.jpg]
 =Chapter 8: Tonal Scale=

@@ Line 1: / Line 1: @@
 =Download Materials For Chapter 8=
-For this chapter you can use your own digital image in RGB color mode, or you use our file:
+For this chapter you can use your own digital image in RGB color mode, or you use our file: [Fig08_rgbimage_CS6.jpg | http://wiki.digital-foundations.net/images/workfiles/Fig08_rgbimage_CS6.jpg]
 =Chapter 8: Tonal Scale=

@@ Line 37: / Line 37: @@
 Digital cameras use memory cards to store file information within the camera. To send the images from the storage device within the camera to the computer, the camera is connected to the computer via a USB cable. Alternatively, a card reader can be used to connect the memory card to the computer and read it like a small hard drive (similar to a jump drive). When using a card reader, simply drag and drop the folder of image files from the card reader (it will appear on the desktop as an external hard drive) to the desktop or documents folder. Once images are copied to the desktop, it is safe to delete them from the card.
-. If you connect your camera to the computer through the USB cable, then you will use an application to read the images. On a Mac, iPhoto may automatically launch; however, our favorite Mac application is Image Capture. If you are using a Mac and don’t see Image Capture on your dock, look in Hard drive > Applications for it. To transfer files from the camera to the computer with Image Capture, connect your camera to the computer (USB or Firewire), launch the program and press the <span style="color:red"><strike>“Download All” or “Download Some…”</strike>"Import" or "Import All"</span> button.
+. If you connect your camera to the computer through the USB cable, then you will use an application to read the images. On a Mac, iPhoto may automatically launch; however, our favorite Mac application is Image Capture. If you are using a Mac and don’t see Image Capture on your dock, look in Hard Drive > Applications for it. To transfer files from the camera to the computer with Image Capture, connect your camera to the computer (USB or Firewire), launch the program and press the "Import" or "Import All" button.
 [[File:Fig08_Ex1_01_CS6.png|400px]]
-. By default, images will be downloaded and saved to the “Pictures<span style="color:red"><strike>, Movies, and Music folders</strike>” folder</span> on the hard drive. Use the scroll menu next to “<span style="color:red"><strike>Download</strike> Import</span> To:” Change the location of the files by selecting “Other…” and then selecting the <span style="color:red"><strike> desktop or</strike></span> folder of your choice.
+. By default, images will be downloaded and saved to the “Pictures” folder on the hard drive. Use the scroll menu next to “Import To:” Change the location of the files by selecting “Other…” and then selecting the folder of your choice.
 [[File:Fig08_Ex1_02_CS6.png|400px]]
-. <span style="color:red"><strike>“Download Some…”</strike> "Import All" <strike> will display small icons of each image</strike> will import all of the images on the camera or device. <span style="color:red"><strike>and</strike></span> You can choose which images to download by CMD+clicking on icons to select multiple files <span style="color:red"><strike>for download</strike> and then clicking on the "Import" button.
+. "Import All" will import all of the images on the camera or device. You can choose which images to download by CMD+clicking on icons to select multiple files and then clicking on the "Import" button.
 [[File:Fig08_Ex1_03_CS6.png|400px]]
-''After clicking <span style="color:red"><strike>"Download Some..."</strike>"Import", small green check marks appear next to the <strike>small</strike> thumbnails of each image <strike>appear</strike></span>. <strike>In this illustration, the highlighted images have been selected by holding the Command Key and clicking once on each thumbnail once.''</strike>''
+''After clicking "Import", small green check marks appear next to the thumbnails of each image imported.''
 =Exercise 2: Minor adjustments to the original file=

@@ Line 37: / Line 37: @@
 Digital cameras use memory cards to store file information within the camera. To send the images from the storage device within the camera to the computer, the camera is connected to the computer via a USB cable. Alternatively, a card reader can be used to connect the memory card to the computer and read it like a small hard drive (similar to a jump drive). When using a card reader, simply drag and drop the folder of image files from the card reader (it will appear on the desktop as an external hard drive) to the desktop or documents folder. Once images are copied to the desktop, it is safe to delete them from the card.
-. If you connect your camera to the computer through the USB cable, then you will use an application to read the images. On a Mac, iPhoto may automatically launch; however, our favorite Mac application is Image Capture. If you are using a Mac and don’t see Image Capture on your dock, look in Hard drive > Applications for it. To transfer files from the camera to the computer with Image Capture, connect your camera to the computer (USB or Firewire), launch the program and press the “Download All” or “Download Some…” button.
+. If you connect your camera to the computer through the USB cable, then you will use an application to read the images. On a Mac, iPhoto may automatically launch; however, our favorite Mac application is Image Capture. If you are using a Mac and don’t see Image Capture on your dock, look in Hard drive > Applications for it. To transfer files from the camera to the computer with Image Capture, connect your camera to the computer (USB or Firewire), launch the program and press the <span style="color:red"><strike>“Download All” or “Download Some…”</strike>"Import" or "Import All"</span> button.
-[[File:Fig08_Ex1_01.jpg|400px]]
+[[File:Fig08_Ex1_01_CS6.png|400px]]
-. By default, images will be downloaded and saved to the “Pictures, Movies, and Music folders” on the hard drive. Use the scroll menu next to “Download To:” to change the location of the files by selecting “Other…” and then selecting the desktop or folder of your choice.
+. By default, images will be downloaded and saved to the “Pictures<span style="color:red"><strike>, Movies, and Music folders</strike>” folder</span> on the hard drive. Use the scroll menu next to “<span style="color:red"><strike>Download</strike> Import</span> To:” Change the location of the files by selecting “Other…” and then selecting the <span style="color:red"><strike> desktop or</strike></span> folder of your choice.
-[[File:Fig08_Ex1_02.jpg|400px]]
+[[File:Fig08_Ex1_02_CS6.png|400px]]
-. “Download Some…” will display small icons of each image, and you can choose which images to download by CMD+clicking on icons to select multiple files for download.
+. <span style="color:red"><strike>“Download Some…”</strike> "Import All" <strike> will display small icons of each image</strike> will import all of the images on the camera or device. <span style="color:red"><strike>and</strike></span> You can choose which images to download by CMD+clicking on icons to select multiple files <span style="color:red"><strike>for download</strike> and then clicking on the "Import" button.
-[[File:Fig08_Ex1_03.jpg|400px]]
+[[File:Fig08_Ex1_03_CS6.png|400px]]
-''After clicking "Download Some..." small thumbnails of each image appear. In this illustration, the highlighted images have been selected by holding the Command Key and clicking once on each thumbnail once.''
+''After clicking <span style="color:red"><strike>"Download Some..."</strike>"Import", small green check marks appear next to the <strike>small</strike> thumbnails of each image <strike>appear</strike></span>. <strike>In this illustration, the highlighted images have been selected by holding the Command Key and clicking once on each thumbnail once.''</strike>''
 =Exercise 2: Minor adjustments to the original file=

@@ Line 55: / Line 55: @@
 . For this exercise, open any image from your digital camera or scanner, or open the file included in the Download Work Files called "Fig08_rgbimage_CS6.psd" in Photoshop. The image in the Download Work Files is a photograph of a purple flower by Fred Benenson.
-. Whenever an image is scanned or captured digitally, the process of digitizing a three dimensional reality into a two dimensional file results in a loss of contrast. Unsharp Mask is a filter that is commonly used to compensate for this loss. Click Filters>Unsharp Mask.
+. Whenever an image is scanned or captured digitally, the process of digitizing a three dimensional reality into a two dimensional file results in a loss of contrast. Unsharp Mask is a filter that is commonly used to compensate for this loss. Click Filters > Unsharp Mask.
 [[File:Fig08_Ex2_2a_CS6.png|400px]]

@@ Line 144: / Line 144: @@
 . From the upper right pull-down menu in the Histogram palette, choose “All Channels View” to see the histogram for the composite RGB channel as well as the single red, green and blue channels that comprise the image. Even though the image is seen in color, the overall scale of gray values should be evaluated. Notice the graphs in the Histogram palette for each of the three separate channels (ask the same questions as we posed when evaluating a grayscale image in exercise two).
-[[File:Fig08_Ex4_03_CS6.png|400px]]
+[[File:Fig08_Ex4_03_CS6.png|400px]]&nbsp;&nbsp;&nbsp; [[File:Fig08_Ex4_03a_CS6.png|400px]]
 ''Look at the individual histograms for the red, green, and blue channels. Notice that there is more highlight information in the red channel, while all three channels peak around the same point in the shadow areas. Also notice that the red channel has the most color information across the x-axis while the other two channels have steeper slopes towards the start and ending points of the curves.''

← Older revision		Revision as of 20:45, 14 February 2013
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	[[File:Fig08_Ex4_01_CS6.png\|400px]]		[[File:Fig08_Ex4_01_CS6.png\|400px]]
−
−	''The image on the left with the Levels dialog box on top of it is the "before" version of the file. The image on the right is the "after" version. Notice that the shadows are considerably darker and it appears there is more contrast between the dark and light areas of image information.'''

	2. Open any image in RGB color mode (you can use your own color image or from the Download Work Files called "Fig08_rgbimage_CS6.psd) for this step. Look at the Histogram palette to see information about the grayscale values in the image.		2. Open any image in RGB color mode (you can use your own color image or from the Download Work Files called "Fig08_rgbimage_CS6.psd) for this step. Look at the Histogram palette to see information about the grayscale values in the image.

@@ Line 2: / Line 2: @@
 For this chapter you can use your own digital image in RGB color mode, or you use our file:
 =Chapter 8: Tonal Scale=
@@ Line 55: / Line 53: @@
 =Exercise 2: Minor adjustments to the original file=
-. For this exercise, open any image from your digital camera or scanner, or open the file included <span style="color:red"><strike> on the CD</strike>in the Download Work Files</span> called "Fig08_rgbimage<span style="color:red">_CS6</span>.psd" in Photoshop.
+. For this exercise, open any image from your digital camera or scanner, or open the file included in the Download Work Files called "Fig08_rgbimage_CS6.psd" in Photoshop.
 . Whenever an image is scanned or captured digitally, the process of digitizing a three dimensional reality into a two dimensional file results in a loss of contrast. Unsharp Mask is a filter that is commonly used to compensate for this loss. Click Filters>Unsharp Mask.
@@ Line 78: / Line 76: @@
-. At this point, it is a good idea to check the Image Size dialog box (Image>Image Size) to evaluate the resolution settings. Ask yourself, at what size do I plan to print this image? If the resolution is too low (many digital cameras record very large images, but the resolution is set at 72 dpi), be sure to uncheck “Resample Image” before adjusting the resolution to a higher number. You should see that as the value of the resolution (measured in dots per inch) ''increases'', the width and height of the file ''decreases'' and the amount of pixel information (in the top boxes, which should be grayed-out) remains the same. If all of this is not happening for you, and you are trying to increase the resolution of the file, something is wrong!<span style="color:red">Our image has a resolution of 240 dpi, so it is unnecessary to change.</span>
+. At this point, it is a good idea to check the Image Size dialog box (Image>Image Size) to evaluate the resolution settings. Ask yourself, at what size do I plan to print this image? If the resolution is too low (many digital cameras record very large images, but the resolution is set at 72 dpi), be sure to uncheck “Resample Image” before adjusting the resolution to a higher number. You should see that as the value of the resolution (measured in dots per inch) ''increases'', the width and height of the file ''decreases'' and the amount of pixel information (in the top boxes, which should be grayed-out) remains the same. If all of this is not happening for you, and you are trying to increase the resolution of the file, something is wrong! Our image has a resolution of 240 dpi, so it is unnecessary to change.
 [[File:Fig08_Ex2_4a_CS6.png|400px]]&nbsp;&nbsp;&nbsp; [[File:Fig08_Ex2_4b_CS6.png|400px]]
-''Notice the button for 'Resample Image' is not checked in the Image Size dialog box on the left. In the Image Size dialog box on the right, where the resolution value was changed to <span style="color:red"><strike>200 DPI</strike> 936 dpi</span>, the width and height that the image will be when it is printed is reduced to 4 by 6 inches and the amount of pixels (in the top part of the box) remains the same.''
+''Notice the button for 'Resample Image' is not checked in the Image Size dialog box on the left. In the Image Size dialog box on the right, where the resolution value was changed to 936 dpi, the width and height that the image will be when it is printed is reduced to 4 by 6 inches and the amount of pixels (in the top part of the box) remains the same.''
 <table class="infobox">
@@ Line 97: / Line 95: @@
 Now we will take a look at the tonal range within the image. This can be done in any color mode, but for the purpose of keeping this process easy for the first time, we’ll change the image to grayscale color mode.
-. Click on Image > Mode > Grayscale to convert the image from RGB color mode to Grayscale. (Click OK through the "Discard Color Information" dialog box.) Save the file as <span style="color:red"><strike>trees</strike>flower</span>_gray.psd.
+. Click on Image > Mode > Grayscale to convert the image from RGB color mode to Grayscale. (Click OK through the "Discard Color Information" dialog box.) Save the file as flower_gray.psd.
-. Click Window > <span style="color:red"><strike>Workspace > Default Workspace</strike>Histogram. <strike>Then click on the Histogram tab within the Navigator and Info Palette to the right side of the screen.</strike></span>
+. Click Window > Histogram.
 The next part of this exercise is to be observant about the value of the light and dark tones in your image. We do this with the use of the Histogram palette.
@@ Line 144: / Line 142: @@
 ''The image on the left with the Levels dialog box on top of it is the "before" version of the file. The image on the right is the "after" version. Notice that the shadows are considerably darker and it appears there is more contrast between the dark and light areas of image information.'''
-. Open any image in RGB color mode (you can use your own color image or from the <span style="color:red"><strike>CD</strike>Download Work Files</span> called "Fig08_rgbimage<span style="color:red">_CS6</span>.psd) for this step. Look at the Histogram palette to see information about the grayscale values in the image.
+. Open any image in RGB color mode (you can use your own color image or from the Download Work Files called "Fig08_rgbimage_CS6.psd) for this step. Look at the Histogram palette to see information about the grayscale values in the image.
 . From the upper right pull-down menu in the Histogram palette, choose “All Channels View” to see the histogram for the composite RGB channel as well as the single red, green and blue channels that comprise the image. Even though the image is seen in color, the overall scale of gray values should be evaluated. Notice the graphs in the Histogram palette for each of the three separate channels (ask the same questions as we posed when evaluating a grayscale image in exercise two).
@@ Line 183: / Line 181: @@
 Image > Adjustments > Hue/Saturation can be used to increase or decrease the saturation of specific hues within the image.  This palette is often used to make a dominant color appear more vibrant within an image, but it is hard to notice if the image is not being viewed at 100 percent. Even then, sometimes it is easier to see the results of this image adjustment in the final print. If you are using the file included on the disk, the following details are the adjustments that we made on the file to demonstrate this concept.
-. Click Image > Adjustments > Hue/Saturation. Use the pull-down palette on the word, "Master," to work specifically on the <span style="color:red"><strike>green</strike> magenta</span> areas of the image.
+. Click Image > Adjustments > Hue/Saturation. Use the pull-down palette on the word, "Master," to work specifically on the magenta areas of the image.
 [[File:Fig08_Ex5_01_CS6.png|400px]]