Bear in mind that the imaging of lenticular plates has special requirements as well. Although each batch of lenses has a nominal frequency (pitch) that you create the interlaced images for, in actual practice the true frequency/pitch of each batch will vary somewhat, due to manufacturing variability. If the pitch of the interlaced images does not exactly match the actual pitch of the manufactured lenses, the 3D effects won't work properly. For this reason, lenticular printers rely on devices like Kodak's VMR (Variable Mainscan Resolution) platesetters, which allow them to make micro-adjustments to the frequency of the output when they image the plates, in order to scale the output to match the measured pitch of each different batch of lenses.