load channel as selection not picking up greys

[kwc1980]

It was all fine before but suddenly now, when i load an alpha channel as selection, only the super white areas get picked up and not the grey areas.  Not sure what I changed but it is doing it for all the channels.

Any ideas?

[Chuck Uebele]

Can you show a screen shot?

[kwc1980]

It used to pick up all the gray parts when i click command + Alpha channel. Now it just picks the squiggle only.

[D Fosse · Accepted solution]

The marching ants mark 50% gray, so this is entirely as it should be. The rest is below 50%.

Note that this doesn't mean it's not selected. A luminosity selection copies the full tonal scale.

But also note that any on-screen single channel representation is interpreted according to your working gray. So with a different gamma/dot gain it could well be that the dark grays will tip over the 50% line.