Stacking Problem

[Michael Erlewine]

When I stack layers of an image, I frequently get what you see along the bottom of this photo. Sometimes it is on the bottom and a side as well.

Anyone know what causes this. Using the Nikon Z7, any lens, and stacking.

[bobfriedman]

you need to crop that portion.. it is due to frame image size reduction from the first or last image, check them and you will see that the focus extent was so great as to reduce the image frame on the final image.

how many layers did you use on this one?

[rosko]

I got the same issue recently on this image : https://nikongear.net/revival/index.php?topic=9459.0

However, I got this issue on top instead the bottom. (with combine ZP).

I just cropped it.

I have no idea why that happened.

Francis.

[Michael Erlewine]

Well , yeah. I also crop it, but wonder how to avoid. It can happen with a small or large stack.

[Birna Rørslett]

The framing varies between the individual images. The stacking software uses normally the first, or last, frame in the stack to align the remainder.

You might occasionally have an unintended composition shift in the first few frames. If so, deleting these from the stack helps.

[Michael Erlewine]

Thanks all. I will look into how much I try to capture from first to last. I might be better to two batches and then combine the two results. Make any sense?


Here is one that was more limited and worked out...using the Nikon  Repro f/2.8 100mm

[bobfriedman]

you also might try reversing the order... or removing an image that is possibly not consecutive..

[Birna Rørslett]

I found that some challenging stacks can be brought under control by doing separate stacking of small subsets, then input these in an iterative fashion to get the final image.

[bobfriedman]

I found that some challenging stacks can be brought under control by doing separate stacking of small subsets, then input these in an iterative fashion to get the final image.

true.. called "slabbing" by some.. Rik Littlefield has a "slabbing" function in ZereneStacker