Stupid question on Saving Selections`

[mistermonday]

Isaac, after you have selected the luminosity, and you Select > Save Selection, there are 2 choices in the Pull-Down Menu of the dialog box. If you leave the default and you save the selection as a new channel, then your image will be inverted and saves as a new channel in the same image that you are working on. If you select New Document from the pull down menu, then PS will create a new image with a singe layer (mode will be Multichannel)and it will look identical to the the B channel and it will not be inverted. So are you actually saving the selection to a channel or to a new document? Or you are not doing a Copy and Paste of the selection?
Regards, Murray

[Flora]

Hi,

Murray,

thank you so much for taking the time to experiment with the copy+paste I thought was at the origin of Isaac's problem! ... Needles to say, your results were exactly the same as mine!

Isaac,

thank you for the picture!

I've been trying to find something on the Internet, particularly on the Adobe site and to reproduce your definite 'inversion' in this couple of days... but like Murray, I couldn't duplicate it by simply saving the selection as a New Document.

Attachment 1 show the path I followed to save the selection as a New Document.

Attachment 2 shows the New multichannel Document. (like for Murray, identical to the LAB B channel).

Attachment 3 ... the only way I was able to duplicate your inversion was by inverting Ctrl+I either the B Channel immediately, or the New Document after saving...