It's been a while, but before it was possible to create gradients using exclusively CSS it was a handy tool to isolate a 1 px cross-section of a vertical or horizontal gradient to use as a background image.
So if you had the following image as a mockup you could use the single-column marquee tool to grab a 1 x 64 px slice and save it as a lightweight GIF ...
If I understand correctly you'd like to either move it or manipulate the selection. Moving it is as easy as staying on the marquee tool and dragging the circle where you would like it. If you need to manipulate it a bit after the fact, then you can choose "transform selection" which is located under the "Select" menu at the top. Hope this helps.
You might want to read Andrei Herasimchuk's answer to a similar question on Quora.
In short, there's no obvious purpose, but they can be used to create guides by selecting a single line and filling it with a color. This seems a bit redundant now that Photoshop has real guides, but I guess the single pixel line allows you to get a bit more creative about how ...
Rather than trying to zoom while holding the mouse button down for a selection, I find the best option is to select what you can and let go. Then zoom in, hold the Shift key down to add to the current selection and continue drawing your selection.
Basically, a selections does not need to be made in a single drag of the mouse. Your'e free to let go of the ...
No, there's not a way to zoom while selecting with the Marquee Selection tool. You'd have to zoom in/out before starting your next selection with that tool. I can't answer as to whether there's a plug-in to do that, but I have my doubts one exists.
An alternative that would allow you to zoom while making a selection would be to use the Lasso/Polygonal ...
You will have to make the effects their own layer, or convert the object to a smart object.
Smart Object(recommended non-destructive)
Right click on the layer and convert it to a smart object. It should account for the effects in your bounding box and dimensions.
Select the object and Go to Layer -> Layer Style -> Create Layer
New layer (Command/Ctrl+Option/Alt+Shift+N)
Merge Visible (Command/Ctrl+Option/Alt+Shift+E)
Command/Ctrl click the tumbnail
Delete the new layer if necessary
You could also use the Create Layer option by Control/Right-clicking the fx icon next to the layer name in the Layer Panel.
Not a perfect solution, but I was interested in this so I tried to think of some creative alternatives. Here's the best one I found:
Selected Fixed Size under rectangular marquee and select the size of your region.
Now simply click M to select Rectangular Marquee and then click on the canvas to instant create a selected region and the V to go back to the ...
If you need a rectangular selection to be finely tweaked… after making a rough selection with the Marquee tool, go to Select > Transform Selection. Then you can resize the selections from the corners or sides of the marquee while zooming in and out in-between adjustments.
Nothing has changed. It's the same in CS6 as it is in CC, you just have preferences set differently.
Select the Move Tool and then Uncheck the Auto Select option in the Control Bar across the top of the screen.
There's no shortcut, but you can create a Tool preset with specific options set.
Open the Tool Presets Panel (View > Tool Presets)
Select the Marquee Tool
Set the options for the Marquee Tool how you want them
Click the New button on the bottom of the Tool Presets panel, you'll be asked to give the preset a name.
From that point forward, you can merely ...
In Normal mode the Width and Height options are not useable. This is by design. This is so you can use the marquee tool to freely select a size or ratio.
In Fixed Ratio you can choose a ratio for your selection to draw out at.
In Fixed Size mode you can enter in a height and width for your selection.
I don't believe there exists a modifier combo to duplicate a selection.
You can move or transform a selection, without altering the pixels, by using Select > Transform Selection in the menu. But that still will not allow you to duplicate the selection.
If you want to duplicate a selection, the easiest method I know if is to use the Channels Panel
I don't recall Photoshop being able to do this. If it did, it was many versions ago, possibly before CS. (Mind you, I started on version 4.)
What you can try is to toggle Quick Mask mode, make a copy of the masked area, and toggle out. You should now have two equally-sized selections.
If you are using the Selection Tool you can zoom in and out of your image by using the plus and minus keys toward the top of your keyboard (numeric keypad if you have one). However, I find it much easier to navigate my canvas using the spacebar which turns on panning.
I zoom in just close enough to see the edges of my image clearly but too close to where I'...
In CS 3 and above, at least.
Select the Rectangle Tool (shortcut key "U").
Select the Rounded Rectangle icon from the Options at the top of your workspace. Or (shortcut key "Shift + U").
Choose a Radius from the Options at the top of your workspace.
(Hint: pull out guides if you want to quickly control the size of your rounded rectangle.)
Draw your ...