A histogram illustrates how pixels in an image are distributed by graphing the number of pixels at each color intensity level. The histogram shows detail in the shadows shown in the left part of the histogram , midtones shown in the middle , and highlights shown in the right part A histogram can help you determine whether an image has enough detail to make a good correction.

The histogram also gives a quick picture of the tonal range of the image, or the image key type. And, an average-key image has detail concentrated in the midtones.

An image with full tonal range has some pixels in all areas. Identifying the tonal range helps determine appropriate tonal corrections. Overexposed photo B. Properly exposed photo with full tonality C. Underexposed photo. The Histogram panel offers many options for viewing tonal and color information about an image. By default, the histogram displays the tonal range of the entire image. To display histogram data for a portion of the image, first select that portion.

You can view an image histogram as an overlay in the Curves dialog box by selecting the histogram option under Curve Display Options, and in the Curves Properties panel, or by choosing Curve Display Options from the panel menu, then Histogram. Channel menu B. Uncached Refresh button D. Cached Data Warning icon E. Expanded View. Displays the histogram with statistics. It also displays: controls for choosing the channel represented by the histogram, viewing options in the Histogram panel, refreshing the histogram to display uncached data, and choosing a specific layer in a multilayered document.

Compact View. All Channels View. Displays individual histograms of the channels in addition to all the options of the Expanded View.

The individual histograms do not include alpha channels, spot channels, or masks. In the All Channels View, choosing from the Channels menu affects only the topmost histogram in the panel.

If you switch to Compact View, the channel continues to be shown in color. If you switch to Compact View, the composite histogram continues to be shown in color. Std Dev Standard deviation. Displays the cumulative number of pixels at or below the level underneath the pointer. Shows the current image cache used to create the histogram. When the cache level is higher than 1, the histogram is displayed faster. In this case, the histogram is derived from a representative sampling of pixels in the image based on the magnification.

The original image is cache level 1. At each level above level 1, four adjacent pixels are averaged to arrive at a single pixel value.

When Photoshop makes a quick approximation, it can use one of the upper levels. Click the Uncached Refresh button to redraw the histogram using the actual image layer. Entire Image. Selected Layer. Adjustment Composite. Displays a histogram of an adjustment layer selected in the Layers panel, including all the layers below the adjustment layer.

When making adjustments using the Adjustments panel, changes are automatically reflected in the Histogram panel. Original histogram B. Adjusted histogram C. Shadows D. Midtones E. When a histogram is read from a cache instead of the current state of the document, the Cached Data Warning icon appears in the Histogram panel.

Histograms based on the image cache are displayed faster and are based on a representative sampling of pixels in the image.

You can set the maximum cache level from 2 to 8 in the Performance preference. A higher cache level setting will increase the redraw speed for large, multi-layer files, but requires additional usage of system RAM. If RAM is limited or you work mainly with smaller images, use lower cache level settings.

Click the Cached Data Warning icon. Click the Uncached Refresh button. For information about cache level, see Histogram panel overview. You can use the Info panel to see the color value of pixels as you make color corrections. When you work with the Properties panel, the Info panel displays two sets of color values for the pixels under the pointer.

The value in the left column is the original color value. The value in the right column is the color value after the adjustment is made. You can view the color of a single location using the Eyedropper tool. You can also use up to four Color Samplers to display color information for one or more locations in the image. These samplers are saved in the image, so you can refer to them repeatedly as you work, even if you close and reopen the image.

You can view color information for specific pixels in the image while adjusting color in the Properties panel. Make adjustments in the Properties panel.

As you make adjustments, view the before and after color values in the Info panel. Move the pointer over the image to view color values at the pointer location.

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You still have access to the scroll controls and to the Hand and Zoom tools using keyboard shortcuts. To delete a color sampler, drag the sampler out of the document window. Legal Notices Online Privacy Policy. Buy now. User Guide Cancel. Make it. About histograms. Histogram panel overview. By default, the Histogram panel opens in Compact View with no controls or statistics, but you can adjust the view.

Adjust the view of the Histogram panel. Choose a view from the Histogram panel menu. Displays a histogram with no controls or statistics. The histogram represents the entire image. View a specific channel in the histogram. Choose an individual channel to display a histogram of the channel, including color channels, alpha channels, and spot channels. View channel histograms in color. From the Histogram panel, do one of the following:. View histogram statistics.

Choose Show Statistics from the Histogram panel menu. Do one of the following:. To view information about a specific pixel value, place the pointer in the histogram.

To view information about a range of values, drag in the histogram to highlight the range. The panel displays the following statistical information below the histogram:. Represents the average intensity value. Represents how widely intensity values vary. Shows the middle value in the range of intensity values. Represents the total number of pixels used to calculate the histogram. Displays the intensity level of the area underneath the pointer.

Shows the total number of pixels corresponding to the intensity level underneath the pointer. Cache Level. View the histogram for a multilayered document. Choose Expanded View from the Histogram panel menu. Choose a setting from the Source menu. The Source menu is not available for single-layered documents. Displays a histogram of the entire image, including all layers. Preview histogram adjustments.

Adobe Illustrator CS6 Keyboard Shortcuts for Mac

 
Illustrator CS6 Cheat Sheet Zoom to selection (while on any other tool) Perspective Skewing (Free Transform Tool) Alt Click then hold Ctrl-Shift. Shortcuts. Windows. macOS. Undo, Ctrl + Z, Command + Z. Redo, Shift + Ctrl + Z, Shift + Command + Z. Cut, Ctrl + X, Command + X.

Adobe illustrator cs6 keyboard shortcuts pdf free

Keyboard Shortcuts. Project Quick Reference. November 8. Curso Minitab Key Shortcut. Functii – Tastatura Laptop. Scurtaturi W Photoshop Cs5 Tools Modifier Keys. Read me. Illustrator Cs4 Tools Modifier Keys.

Photoshop Cs4 Keyboard Shortcuts. Pen Tool Made Simple Bridge Cs5 Keyboard Shortcuts. Photoshop Cs3 Poster Win. Illustrator Cs3 Poster Mac. Sibelius Reference 8. See Customize keyboard shortcuts. Keyboard shortcuts cheat sheet. Popular shortcuts. Work with documents. Select tools. View artwork. Work with selections. Edit shapes.

Work with Live Paint groups. Work with objects. Create variable width points. Work with type. Use panels. Actions panel. Alt-click expansion triangle. Option-click expansion triangle. Set options for action set. Double-click folder icon. Play a single command. Ctrl-click Play Current Selection button.

Command-click Play Current Selection button. Begin recording actions without confirmation. Alt-click New Action button. Option-click New Action button. Brushes panel. Open Brush Options dialog box. Double-click brush. Duplicate brush. Drag brush to New Brush button. Character and Paragraph panels. Open the Character panel. Open the Paragraph panel. Up Arrow or Down Arrow. Highlight the font name field in the Character panel. Color panel. Ctrl-click color bar. Command-click color bar.

Alt-click color bar. Option-click color bar. Open Color Guide. Change the color mode. Shift-click color bar. Move color sliders in tandem. I hope this will help you memorize a few more shortcuts and be even more productive. Even more, make sure you read this InDesign vs. Illustrator content to find the correct answer to when and why choose one software over the other. Lorem ipsum dolor sit amet, consectetur adipiscing elit.

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