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Rectangular drop-in filter in aluminium frame, neutral grey glass

Nisi

Nisi ATHENA FS ND 1.5 5-Stop Drop-In Filter camera filter

SKU CH-K6PX-31DDR

A 5-stop neutral-density drop-in filter for ATHENA lenses that enables slower shutter speeds and wider apertures while preserving colour fidelity

  • Darkens the overall image by 5 stops for extended exposure control
  • Enables slower shutter speeds to capture motion with creative blur
  • Facilitates wider aperture settings for shallow depth-of-field effects
  • Full-spectrum neutrality preserves authentic colour fidelity without shifts
  • Optical Nano Coating on high-quality glass reduces reflections and protects the surface

Purpose and compatibility

The NiSi ATHENA FS ND 1.5 5-Stop Drop-In Filter is built for NiSi ATHENA full-frame prime lenses that include a drop-in filter slot. It darkens the overall image by 5 stops, allowing slower shutter speeds and wider aperture settings for creative exposure control.

Optical standard and coating

The filter delivers full-spectrum neutrality, preserving authentic colour fidelity without common shifts or distortions. NiSi Optical Nano Coating technology is applied to the high-quality optical glass to maintain clarity and reduce unwanted reflections.

Fit and handling check

Verify that your ATHENA lens has the dedicated drop-in filter slot before ordering. The lightweight aluminium frame is designed to sit securely in that slot, so the filter cannot be used with lenses that lack the matching cavity.

Highlights

  • Darkens the overall image by 5 stops for extended exposure control
  • Enables slower shutter speeds to capture motion with creative blur
  • Facilitates wider aperture settings for shallow depth-of-field effects
  • Full-spectrum neutrality preserves authentic colour fidelity without shifts
  • Optical Nano Coating on high-quality glass reduces reflections and protects the surface

Specifications

No published specifications for this item yet.

Questions about this item

Which ND strength should I choose for the Athena drop-in slot?

The FS ND 1.5 gives a fixed 1.5-stop reduction, darkening the image by 5 stops to allow slower shutter speeds or wider apertures on Athena full-frame primes.

What does the 1.5-stop rating do to my exposure in practice?

It cuts light by 1.5 stops, letting you lengthen exposure time or open the iris for motion blur or shallow depth of field without changing ISO.

How does the drop-in filter mount and what does that limit?

It slides into the dedicated drop-in slot on NiSi Athena lenses, so it only works with that lens series and cannot be used on standard front-thread filters.

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