def _get_zooms_orig(morph):
    """Compute src zooms from morph zooms, morph shape and src shape."""
    # zooms_to = zooms_from / shape_to * shape_from for each spatial dimension
    return [mz / ss * ms for mz, ms, ss in
            zip(morph.zooms, morph.shape,
                morph.src_data['src_shape_full'][::-1])]