It's called the targeted adjustment tool. Has it ever been there on the Windows 7 computer?
Thanks for clarifying the name. To my knowledge no, (at least I don't think so). I actually never used it before last month. So I just noticed it reacently
The only thing I can think of to try is to reset your preferences to see if that makes a difference. I have the tool in all the places it is supposed to be on my computer, but I'm using Windows 10.
will try that, thanks
Maybe a silly question- but have you actually clicked on the 'Target' icon to toggle it to the 'TAT' icon?
Targeted adjustment tool “tat”
Lets you adjust sliders in HSL, and points on a Tone Curve, by dragging the tool on the image.
Click the small circle ‘Target’ to change to the 'TAT' icon in the tone-curve or HSL panel.
When active the circle icon appears with arrows above & below the circle. The + is the focal point of the tool on an image.
Position the cursor on the image, hold the left mouse button & move mouse up/down to alter the adjustment under the + cursor (as you would by moving sliders)
With HSL the advantage of the “tat” is that it will affect all colours or tones that exist in the image area under the ‘tat’ cursor and not just one single colour or tone.