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Tag Archives :SV503 Doublet

Difference Between APO & Achromatic Lens Under Diffraction Ring

Test the APO and Achromatic, make sure the difference under diffraction ring, SV305 doublet is quality achromatic lens with SPL-51 ED glass.  ...

Read more  SV503 Doublet,  APO,  SPL-51,  Achromatic Lens