Hi all!
For example, nativ pics are cubefaces 1909x1909 (equi 6000x3000).
18.3 generate 3-levels multiresolution 1910x1910, 956x956 and 512x512.
19pr4 generate only 2-levels multiresolution 1792x1792 and 1024x1024.
This means that the maximum resolution of 19pr4 is significantly less than the nativ resolution of original files.
Why is there a degradation of image quality in 19pr4?