Issues with panorama

[Andrea Frasca]

Hello everyone, new user here.

I have tried looking for this issue but I haven't found an answer to the issue I'm having.

I have two photos I want to stitch into a panorama, but when I try creating one on the Panorama Persona I always get the message "no panorama found" despite the two images having quite of an overlap and being taken from basically the same spot. At some point I managed to found two photos (I always get several shots of the same picture) that Affinity would stitch into a panorama but when I looked at the result the horizon is always bent at an angle at the joining point. I have tried to straighten those two photos in an external software, but when I try to process them again through Affinity it gives a message of panorama not found (when it DID find it before). The photos are unprocessed RAW files, so all the info it should need is there.

Any suggestions on how to solve this?

[Callum]

Hi Andrea,

If possible could you provide a copy of the images in question so I can try this here at my end?

Thanks
C 

[Andrea Frasca]

@Callum I sure can. I'm attaching the .tif files. The only processing I've done on these was straightening the horizon.

If you need the raw files, I can submit them in private (for obvious reasons).

_DSC0466_DxO.tif _DSC0468_DxO.tif

[David in Яuislip]

It doesn't work in APhoto but Hugin does a fair job. The attached file shows some transparency around the edges because I have not used autocrop which APhoto would have applied had it managed the pano. Next stage is to open the file in APhoto, select the transparent areas, grow the selection a bit, say 10px, then do Edit/Inpaint. Then crop to taste

As an aside, when shooting panos I'd recommend manual exposure and manual focus. Then when developing to tiffs only apply lens corrections and make the white balance the same, don't correct horizons, leave that to the pano software

final.tiff

[Old Bruce]

1 hour ago, David in Яuislip said:

As an aside, when shooting panos I'd recommend manual exposure and manual focus. Then when developing to tiffs only apply lens corrections and make the white balance the same, don't correct horizons, leave that to the pano software

What I do in addition to the above is make a fair number of adjustments (contrast and exposure and maybe some slight use of sharpening and a curves adjustment etc.) but I make a preset and apply that preset to each raw file. You have to select the preset even if it is already selected. This reapplication of the preset is one of the maddening faults of Affinity Photo.

[David in Яuislip]

Fun fact, if you copy the source tiffs then select all four for the panorama then APhoto works, weird or what???

[Andrea Frasca]

Thank you very much for your suggestions.

I always use manual exposure but I'm still not fully confident with manual focus. That's one area where I need to improve. But can the point of focus actually influence the AI panorama stitching? I mean, I know the result would be bad if the focus of two images is completely different, but it shouldn't be much of an issue if there's a barely perceptible difference. Unless the AI is, like, extremely picky.

David, the copy thing is in fact really weird. Computers, what can you do...