Posts tagged "Channels"

October 19, 2015

Loading Luminosity in Photoshop

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.

5:08 AM Permalink
October 16, 2015

Spot Color Channels in Photoshop

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.)

5:07 AM Permalink
October 3, 2015

Loading Channels as Selections in Photoshop

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.

5:36 AM Permalink
October 2, 2015

Viewing Channels in Panel Based Adjustments

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.10_01HSL1

5:28 AM Permalink
October 1, 2015

Viewing Channels in Photoshop

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

Other shortcuts:

• 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.).

5:27 AM Permalink
June 14, 2011

LR3 – Previewing “Clipped” Channels in an Image

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.


4:21 AM Permalink
January 17, 2011

New Spot Channels

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).

5:08 AM Permalink
August 24, 2010

Viewing Individual Channels

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.

5:22 AM Permalink
July 30, 2010

Working with Quick Mask

• “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).

5:17 AM Permalink
July 15, 2010

Legacy Channel Shortcuts

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.

5:37 AM Permalink
July 2, 2010

Selecting Multiple Alpha Channels

PSCS5 – Shift -click to select multiple channels in the Channels panel in order to move, delete transform etc. them.

5:00 AM Permalink
June 18, 2010

Legacy Shortcuts for Displaying Channels

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”.

6:46 AM Permalink
December 16, 2009

Displaying Different Channels in Curves

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.)

4:19 AM Permalink
June 5, 2009

Viewing Layer Masks

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.)

5:44 AM Permalink
April 9, 2009

Spot Color 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 using additional “spot colors” on the printing press.)

6:58 AM Permalink