🚀 go-pugleaf

Dear readers; 

    I have two questions that I hope you will be able to help me with. 
I am currently doing some optical pattern recognition using VanderLugt
Filters(Fourier holograms).  I would like to ask those readers who have
done this kind of work the typical Horner efficiencies yield in their 

optical correlator.  

The second question has to do with holographic plates.  In my work, I 
use either the Kodak 649F plates or the Agfa-Gevaert 8E75HD-7 plates. 
I have found that the Agfa plates yield much better efficiencies. 
Could you please tell me why this could be so and what the repective 
diffraction efficiencies of both thse plates? 

Thank you very much. 

Teik