<span class="n">xyz_</span> <span class="o">=</span> <span class="n">qabS_cam18sl_to_xyz</span><span class="p">(</span><span class="n">qab</span><span class="p">,</span> <span class="n">xyzb</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">Lb</span> <span class="o">=</span> <span class="p">[</span><span class="mi">100</span><span class="p">]</span><span class="o">*</span><span class="mi">5</span><span class="p">,</span> <span class="n">fov</span> <span cla