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In the lower right corner of the window is a cluster of buttons:
The Linear checkbox is a special control that is intended to be used for specific situations only. Most users will not use it at all. This control is enabled only for 16-bit per channel images, and should be used only if you know that the image data is linear (i.e. from a gamma = 1.0 source). Images of this type may be produced by certain high end scanners, digital cameras and scan backs. A linear image, when viewed uncorrected on a monitor, will typically look very dark. If you know that your image is linear, the Linear checkbox will do a better job correcting it than using just the global Brightness control.
The Preferences button was discussed on the previous page.
When the master SmartColor checkbox is checked, automatic corrections are determined and kept current for all of the edit tools, as described earlier in the SmartColor Mode section of this User Guide. The initial state of this checkbox is determined by the Start With preference. If you uncheck the checkbox, all of the current settings remain unchanged (whether they were set automatically or not). Unchecking the checkbox simply turns off the automatic updating of settings from that point on. If the SmartColor checkbox is rechecked, automatic updating is re-enabled, and automatic settings are immediately updated based on the currently active edit tool. That is, if the Black/White Point tool is currently active, the automatic Brightness/Contrast and Hue Selective settings are recalculated. Note that there is also a SmartColor button inside the edit tool panel. This button will only calculate settings for the controls in the current edit tool panel, and will affect the settings of the other three tools only if the master SmartColor checkbox is checked.
Clicking the Undo button will undo the last correction that was made, whether it resulted from changing a slider, clicking SmartColor or Reset, or sampling a neutral pixel for color balance.
Clicking the Reset button will also uncheck the master SmartColor checkbox, and will set all edit parameters to values that effectively turn the edit off completely. Note that there is also a Reset button inside the edit tool panel. This button will only turn off the effect of the selected edit tool, and will affect the settings of the other three tools only if the master SmartColor checkbox is checked.
If you hold down the key when you click the Reset button, the tool controls will be set to the values that were used the last time EditLab was run. This is true for both the global Reset button (the settings for all tools are affected) and the local Reset button (only the settings for the current tool are affected).
If you click Cancel, you will exit the plug-in without changing your image.
The last button, located in the lower right corner, is used to apply the current color edit in the manner stated on the button. If you recall, EditLab can operate in any of four different modes:
The current mode is determined by the Preferences. However, if you hold down the key while you repeatedly click this button, the modes are cycled through — a convenient way to change modes without visiting the preferences panel.
Let's now proceed to the use of each specific edit tool.
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