Here the temporal component of the proximity effect is also clearly shown with the 40× objective: the height of each "L" manufactured with this objective is not constant but increases continuously during the manufacturing process (the "L" motifs being fabricated from top left to bottom right as indicated by a red arrow). The beginning of the L structure is not visible, while its end shows clear signs of over-polymerization. This indicates that as manufacturing progresses, the resin locally becomes artificially more sensitive due to prolonged exposure to the laser beams, consistent with our working-hypothesis of a time-dependant diffusion phenomenon of the generated radicals. In the present case, this effect combines with the overlapping of the light beams, strongly conditioned by the nature of the objective. A slight temporal proximity effect can still be noticed with the 100× objective, but in a more moderate way given the greater NA resulting in a better confinement of the laser intensity along the Z axis. As a consequence, it was possible to find a set of parameters leading to globally uniform structures: each individual L-shaped structure shows a relatively homogeneous width and height along the fabrication path.