Basics Color correcting the view

These five buttons control which color plane(s) to show. The first icon shows all the planes (Red, Green, Blue, Alpha/Component 4). The next four turn the individual planes on or off.

The Alpha/Component 4 button will show the the fourth component plane if one exists, otherwise it shows the alpha channel.

The default hotkeys for these buttons are ~, 1, 2, 3, and 4.

Switches between Brightness/Contrast controls and Black/White Points.

Press R to reset all color correction controls to their default values.

Click the brightness button to reset the brightness to 1.

Enter a value in the number field for the brightness, or click in the field to show a slider.

The field turns yellow when brightness is not 1.

Click the contrast button to reset the contrast to 1.

Enter a value in the number field for the contrast, or click in the field to show a slider.

The field turns yellow when contrast is not 1.

This value is added to all pixels, effectively shifting the brightness of the entire image up or down. This can be useful for looking through intensity “slices” of the image.

The black point of the image, normally 0. This is applied after any image-specific white and black points, so 0 is always black and 1 is always white, regardless of the image data format.

The white point of the image, normally 1. This is applied after any image-specific white and black points, so 0 is always black and 1 is always white, regardless of the image data format.

Click the gamma button to reset the contrast to the default set in the display options window .

Enter a value in the number field for the gamma, or click in the field to show a slider.

The field turns yellow when gamma is not at the default gamma setting.

Adjusts the black and white points to fit the minimum and maximum pixel values of the current image.