Curves eyedroppers

[Abitconfused]

I don't use more than one Curves Adjustment layer eyedropper per layer as I may want to alter my selection of black point and/or white point and I find this works well for me. I also tend to ignore the gray point eyedropper. Am I alone in this or are there more like me out there hidden and afraid?

[IzzieK]

I use all three of them when I feel like it...nowadays because I am taking a 4 week complete course of Photoshop CC, I suppose I will come upon this feature soon. I am not afraid of it I suppose...

[dem]

I only use the grey eyedropper to adjust white balance. To set white and black point I move the end points of the luminance tone curve - that doesn't change the white balance.

[Manfred M]

For certain types of retouching to do WB adjustments, especially in older scanned or jpeg images, I will do black point and white point adjustments in the individual colour channels, so I will get the black point and white point for these channels using the white and black eyedroppers.