I'm using LR6 2015.5.1 and expierenced some strange problems, when merging .dng files into a panorama.
Lightroom stitches the photos perfectly, but the file becomes "very" small. For example I tried to stitch three D810 files 7360x4912. The output panorama size is only 6703x4134? So about 27Megapixels. One D810 file is 36,2 Megapixels... Why does it become so much smaller?
I never realize, that I had the same issues with my Canon 7DII. So I tried to stitch four files (5472x3648) and the panorama ended up being 8450x3339? 28 Megapixels.
Is Lightroom not able to stitch panoramas bigger than 27-28 Megapixels?
Any solution? Suggestions?
The lower height (i.e. 4912 -> 4134) is due to the crop and that seems ok.
How much do the images overlap? You need to take this into your calculation as, again, the crop.
from another thread/post:
The panorama from 36 D700 images was 246.8 megapixels and the DNG file is 863MB. This panorama ran for several hours before it completed. The panorama from 6 D810 files was 154.8 megapixels and the DNG file is 276MB.
The limit is either one of 65,000 pixels on the long edge of a file, or a maximum of 512 MP.