ND Filter Set, Absorptive, 25.4 mm, Qty 9

Technical Specs

  • Size
    Ø25.4 mm
  • Optical Density
    0.04, 0.2, 0.4, 0.6, 0.8, 1.0, 2.0, 3.0
  • Optical Density Tolerance
    ±4% at 546.1 nm
  • Wavelength Range
    400-900 nm
  • Angle of Incidence
  • Wedge
    ≤3 arc min
  • Surface Quality
    60-40 scratch-dig
  • Chamfers
    0.25–0.76 mm face width
  • Chamfers Angle Tolerance
    45° ±15°
  • Cleaning
  • Clear Aperture
    ≥central 80% of dimensions
  • Damage Threshold
    30 W/cm2 CW, typical