Command + Option + 2 (Mac) | Ctrl + Alt + 2 (Win) loads the luminosity of an image as a selection. This can then be used for a variety of manipulations such as adjusting color or building density.
Posts tagged "Channels"
Command (Mac) / Control (Win) -click the new channel icon to create a new Spot Color channel. (Spot Color channels are used primarily for printing additional “spot colors” on the printing press.)
After saving selections as channels, those channels can be loaded back into a selection with the following shortcuts:
• Command -click (Mac) | Control -click (Win) on the channel’s thumbnail to load the channel as a selection.
• Command + Shift (Mac) | Control + Shift (Win) to add additional channels to the selection.
• Option + Command (Mac) | Alt + Control (Win) to subtract another channel from the selection.
• Option + Command + Shift (Mac) | Alt + Control + Shift (Win) to create the intersection of two channels.
When using the panel-based adjustments (a Curves Adjustment layer for example), use Option + 2, 3, 4, etc.(Mac) | Alt (Win) + 2, 3, 4, etc. to view the channels.
The Hue/Saturation and Selective Color commands are slightly different as they don’t map to RGB/CMYK, but the same general rules apply: Option +2 (Mac) | Alt (Win) + 2 selects the Master channel, and Option (Mac) | Alt (Win) + 3, 4, etc. selects the subsequent items in the list.
When working in RGB:
• Command + 2 (Mac) / Control + 2 (Win) displays the Composite (RGB) Channel
• Command + 3 (Mac) / Control + 3 (Win) displays the Red Channel
• Command + 4 (Mac) / Control + 4 (Win) displays the Green Channel
• Command + 5 (Mac) / Control + 5 (Win) displays the Blue Channel
When working in CMYK,:
• Command + 2 (Mac) / Control + 2 (Win) displays the Composite (CMYK) Channel
• Command + 3 (Mac) / Control + 3 (Win) displays the Cyan Channel
• Command + 4 (Mac) / Control + 4 (Win) displays the Magenta Channel
• Command + 5 (Mac) / Control + 5 (Win) displays the Yellow Channel
• Command + 6 (Mac) / Control + 6 (Win) displays the Black Channel
• Command + ~ (Mac) / Control + ~ (Win) switches among open documents
• Command + 1 (Mac) / Control + 1 (Win) zooms to 100%
You can revert back to the old behavior by selecting Window > Workspaces > Keyboard Shortcuts & Menus and enabling Use Legacy Channel Shortcuts, but you will lose Command + ~ (Mac) / Control + ~ (Win) for switching among open documents and Command + 1 (Mac) / Control + 1 (Win) to zoom to 100% (as the Channels shortcuts will revert back to Command + ~ (Mac) / Control + ~ (Win) displays the Composite Channel and moves through the channels starting at 1, 2, 3 etc.).
Hovering your curser over the triangles in the upper left and right of the Histogram panel in Lightroom’s Develop module displays a red or blue preview of the clipped values in the image preview. To toggle on this clipping preview (so that it remains displayed as you move your cursor to other areas), tap the “J” key. The red overlay shows where information in one or more channels (R, G or B) of the image is pure white. The blue overlay shows where information in one or more of the channels (R, G or B) of the image is pure black.
To preview (more specifically) which channel is being pushed to pure black and white, Option (Mac) / Alt (Win) + drag the Blacks/Exposure sliders. Where the image preview is pure black or white, all of the channels are clipped, the various colors show which individual channels (or combination of channels) are clipped.
Command (Mac) / Control (Win) -click the New Channel icon on the Channel panel to create a new Spot Color Channel (instead of a new regular channel).
During a Free Transform, using the Place command, and /or when Cropping, the opacity of layers as well as the visibility of individual channels can be changed on their respective panels. Note: this can be especially useful when using alpha channels and/or with alignment of layers.
• “Q” will toggle between Quick Mask and Normal Mode.
• Double click the Quick Mask icon on the tool panel to view Quick Mask Options.
• Command (Mac) / Control (Win) + 2 to view the Quick Mask, yet edit the composite image. Note: You can view the Channels panel to see what’s happening under the hood – notice how Command (Mac) / Control (Win) + 2 targets the RGB image instead of Quick Mask and that Command (Mac) / Control (Win) + 6 will target the Quick Mask).
PSCS5 – If you prefer to use the legacy channel shortcuts (from Photoshop 3 and before) select Edit > Keyboard Shortcuts and check the Use Legacy Channel Shortcuts option.
PSCS5 – Shift -click to select multiple channels in the Channels panel in order to move, delete transform etc. them.
In Photoshop CS4 we changed the keyboard shortcuts for viewing channels:
“The shortcut to display an individual channel in Photoshop CS3 was previously assigned to Cmd (Mac) / Ctrl (Win) +1, 2, 3, etc. Cmd+1 would show Red, Cmd+2 would show Green, etc. Those shortcuts, in Photoshop CS4 were shifted two places to the right. Therefore Cmd+3 shows Red, Cmd=4 shows Green, etc. (Cmd + 2 shows the composite).”
For those who still prefer the legacy shortcuts for switching among channels, (i.e. you want them set back to PSCS3), select Edit > Keyboard Shortcuts and use the check box to enable “Use Legacy Channel Shortcuts”.
When the Curves Adjustments panel is active, Option (Mac)/ Alt (Win) + 2-6 to toggle through the different channels (2 = composite, 3 = Red, 4 = Green, 5 = Blue or 3-6 for CMYK etc.)
To view a layer mask, Option (Mac) / Alt (Win) -click on the mask thumbnail in the Layers panel. Tapping the “\”(backslash) toggles the display of a layer mask on and off (as a red rubylith overlay). (Looking at the Channels panel, you can see that this shortcut toggles the channels visibility.)
Command (Mac) / Control (Win) -click the new channel icon to create a new Spot Color channel. (Spot Color channels are used primarily for printing using additional “spot colors” on the printing press.)