Accurately find the extent of a capture. I like to see a function (maybe the Command Key) that would slow the movement of the cursor to allow me to accurately select the area to be capture or a function that you could select to be on or off whenever the magnified view is in operation - Thanks.
There is actually a way to do this currently! When you start a capture and see the orange crosshairs, you can use the arrow keys in addition to the mouse to finely select the first corner of your capture. Then if you press the space bar once, that locks in that corner. Then you can use your mouse to move to the second corner and again use the arrow keys for fine-grained movement. Then press the space bar a second time to lock in the second corner.
I realize this is categorized as Mac, so I'm assuming that's what you are using here. I'm a PC user myself, so I'm unsure if this exists on the Mac version. It may not.
On the PC version, you are able to use the arrow keys to "nudge" the crosshairs to the position you want. Then once that initial position is found, you are able to press the Spacebar to lock in the initial position. Then you configure the end position. I generally use the mouse, then the arrow keys to nudge the end position, Then once there I'm able to press the Enter key to finalize the selection and capture.
As I said, you might try this on a Mac. Maybe it's not there. But it would surprise me if it wasn't.