Alignment/stacking issues?

[dhayton]

I am trying to auto align a set of photos (handheld) and it doesn't seem to work properly. The very center of the photos align, but out from there everything gets increasingly out of alignment.

 

I've attached the four jpg files (exported from Lightroom).

I want to align them and use the medium blend mode to get rid of the people.

So I choose "New Stack…" and add the four photos. I choose "Automatically Align Images" and choose "Perspective".

The center tall windows are ok, but everything towards the edges is increasingly out of alignment (see final image).

 

Any suggestions/advice are most appreciated.

Thanks.

 

Edited August 10, 2017 by dhayton
Added more info and final, stacked and "aligned" image

[John Rostron]

These all look the same to me apart from the people in 1-4. They all show a slight inwards convergence at each end. You could try perspective distortion on the merger, though it is hardly noticable unless you are looking for it.

[dutchshader]

Not if you look at the fence on the roof

[John Rostron]

1 hour ago, dutchshader said:

Not if you look at the fence on the roof

You are quite right. Since these are handheld, I would think that such discrepancies are qite likely, but not inevitable.  The only useful advice I can offer is to do it again with more images. If you stack these, then by judiciously hiding and showing the various layers you might get a set with good alignment. You could even try this with your set of four.

 

A more practical suggestion is to use only one layer for the top part of your images, masking this  out in the other layers (or simply erasing it).