Specs: 

• Optics: Achromatic doublet with multiband AR coating

• Dioptric Strength: +0.5

• Clear aperture: 82.5mm

• Filter size: 86mm

  • Screw directly in front of HCDNA

  • Need 77-86mm step up ring to mount in front of Rapido FVD-16A

• Dimensions: 90.9mm (diameter) x 19.20mm (thickness)

• Weight: 6.05oz (171.5g)

Link to Image Quality Test