Laughably simple Photoshop tool Issue

[Michael West]

Somehow I have managed to reverse the "polarity" of the Magnifying Glass tool in photoshop

its default now, rather than magnifying is reducing the size of an image.

How can I reset this function? and perhaps as importantly how did I unknowingly force the "polarity" switch in the first place?

Thank you.

[walter.sk]

The Alt key in Photoshop serves to reverse the way many tools work.  As far as PS now having the magnifying tool default to the "reduce" setting, all I can think of is that your PS preferences file somehow got trashed and you need to generate a new one.  I think you start Photoshop with Control-Shift held down, but I don't remember if that's the combination.

[fdisilvestro]

When you select the "Magnifying Glass tool" there should be a toolbar with its control.

Just clik on the "+" sign (shown in the attached image)

[Michael West]

When you select the "Magnifying Glass tool" there should be a toolbar with its control.

Just clik on the "+" sign (shown in the attached image)

 I had never noticed these icons in the toolbar, and evidently inadvertantly hit the minus icon in a rush to perform some other task

THANK YOU.