Is there a way to quickly put multiple spots of two pictures side by side?

[Mathis5DD0]

Hello!

I want to apologise in advance for any english mistakes since this is not my first language. I am also quite new at using Photoshop.

I have two pictures. On picture #1 I have the left halves of 30 photos that have been cut in two. On picture #2, I have the right halves of the same 30 photos. I want to save a a file of each complete photo (the two halves side by side). Is there any quick way to do that?
I have no idea if my question is clear. Basically, I am looking for a way to put two pictures side by side that lets me move each picture to compare different places of each picture. A bit like what "Window -> Arrange -> 2-up vertical" does but in the same tab and not 2 different ones, so that I can crop and save the 30 pairs.

I tried to put a layer mask on picture #1 to blend out the space next to a photo and move picture #2 as to have the second half of the photo next to the first one, which did exctly what I wanted, but then I would have to change the layer mask for each of the 29 other photos (since the layer mask moves with the layer when I try to put different spots side-by-side). Since I need to do this with more than 2 pictures it would be very time consuming to manually chnage the layer mask for each pair. Is there a faster or better solution?

If my question isn't clear or if you need more details do not hesitate to tell me.

Thank you for your help.

Mathis

[Mathis5DD0 · Accepted solution]

Hey, it's me again.

So I just found out that I can unlink the layer mask and the layer by clicking the little chain icon in the layers tab. By doing this I can creaty a layer mask that stays in place even when I move ther two layers that I want to compare, which seems to be what I was looking for.

I do not see a way to edit or delete my post, so I hope this can save some time to someone who runs into the same issue as me and finds this.

Have a nice day.