Image vs Orthomap resolution/gsd

Hey everyone,

Just wanted to confirm if the resolution of the final orthomap is the same as the resolution as each of the initial images? For example, if my initial images have a GSD of 1cm/pixel, will the final orthomap also has a GSD of 1cm/pixel? Or is there some stretching involved which would not keep this relation?

If there is no direct relation, how would I go about finding the actual resolution (in cm/pixel) of the final orthomap, if i had set resolution to 0.001 in the command line call?

Thank you for your help!!