Overlapping images and get the pixels that exist in all

[purplemonster]

I'm wanting to do a treatment of several images in photoshop as follows.

I have several images similar to each other, in black and white, all with the same size.

What I want is to get all these images and create a layer for each one and then generate a new image with only the black pixels that exist at all.
I get only the pixels that exist in all the images at the same time. It would be a kind of overlay image.

Someone knows how to do this in photoshop?

Thank you.

[jerryb]

hi,
just novice myself...
but couldn't you use the wand tool or the selct>color range .. to select the black you want to keep and do a inverse and delete... that would leave just the black on a trasparent background ..

I'm wanting to do a treatment of several images in photoshop as follows.

I have several images similar to each other, in black and white, all with the same size.

What I want is to get all these images and create a layer for each one and then generate a new image with only the black pixels that exist at all.
I get only the pixels that exist in all the images at the same time. It would be a kind of overlay image.

Someone knows how to do this in photoshop?

Thank you.

[JustinPS]

I think jerryb has the best solution to your question, because as far as I know you can't select specific things (such as colors) on multiple layers at the same time; even if they're linked, you still have to make the selections on each individual layer.