maxpixelzoom not correct

Hi,

if want to do such comparison you need to compare with a tile from the middle of a cubeface,
or you need to compare with the spherical image,

when converting the sphere to cubical then the cubeface becomes 'stretched' toward the edges to keep all source pixels and source details in the image,

and when viewing this kind of 'stretching' will be 'restored' by the projection and the 3D cubeface rotation,

best regards,
Klaus