Adobe ADBCD17648MC Manuale Utente

USING PHOTOSHOP ELEMENTS 8
Color and tonal correction

If the Histogram panel is not open in the Panel Bin, choose Window

  > Histogram.

Choose the source of the histogram’s display from the Source menu:

Displays a histogram of the entire image, including all layers in the multilayered document. 

Displays a histogram of the selected layer in the Layers panel.

Displays a histogram of an adjustment layer selected in the Layers panel, including all the 

layers below the adjustment layer.

To view the histogram for a portion of your image, make a selection in your image, and choose an option from the 
Channel menu:

Displays a histogram that is a composite of individual color channels placed on top of each other. 

Displays the histograms for the individual color channels.

Displays a histogram representing the luminance or intensity values of the composite channel. 

Displays the composite RGB histogram individually by color. Red, green, and blue represent the pixels in those 

channels. Cyan, magenta, and yellow represent where the histograms of two channels overlap. Gray represents areas 
where all three color channel histograms overlap.

Grayscale images have a single channel option: Gray.

To view the following statistical information about a range of values, drag and hold in the histogram to highlight 
the range, or to view information about a specific area of the histogram, place the pointer over the area:

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 at the intensity level underneath the pointer.

Displays the percentage of pixels at and below the level underneath the pointer. This value is expressed as 

a percentage of all the pixels in the image, from 0% at the far left to 100% at the far right.

Shows the setting for the image cache. If Use Cache For Histograms is selected in the Preferences dialog 

box, Photoshop

  Elements displays histograms more quickly but less accurately. To display more accurate histograms, 

deselect this option.