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Rectangular dark glass filter in silver aluminium frame

Nisi

Nisi ATHENA FS ND 1.2 4-Stop Drop-In Filter for ATHENA Lenses

SKU CH-Y45A-FBZG6

Darkens images by four stops for slower shutter speeds and wider apertures, with full-spectrum neutrality and nano coating in a lightweight aluminium frame

  • Darkens images by four stops for extended exposures
  • Enables wider apertures in bright light for shallow depth
  • Full-spectrum neutrality preserves true colours without shift
  • Optical Nano Coating reduces reflections and protects glass
  • Lightweight aluminium frame fits Athena drop-in slot securely

Designed for NiSi Athena Drop-In Slot

This drop-in filter fits NiSi Athena full-frame prime lenses that include a built-in filter slot. It provides a 4-stop neutral-density effect for photographers and filmmakers who need to reduce exposure without changing aperture or shutter settings.

Replaces Front-Mount ND Filters

The drop-in design removes the need for large-diameter screw-in filters and eliminates vignetting on wide-angle Athena lenses. The upgrade is worthwhile when you regularly shoot at wide apertures in bright light or want smoother motion-blur effects with slower shutter speeds.

Check Lens Compatibility Before Ordering

Confirm that your Athena lens has the dedicated drop-in filter tray; the filter will not work with lenses lacking this slot. Ensure the tray mechanism operates smoothly and that no existing filter is already seated in the compartment.

How it compares

Measured against everything we stock in Lens Filters & Polarizers, at today’s prices. Recalculated every night.

Price $69.99
Pricier than about 67% of the 1,281 comparable items (median $48.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does this drop-in filter slot directly into the NiSi Athena lens filter tray?

Yes, it is designed for NiSi Athena full-frame prime lenses that feature a built-in drop-in filter slot.

What is the correct orientation when inserting the filter into the Athena lens slot?

Slide the aluminum frame into the lens drop-in slot with the coated glass facing the sensor until it clicks securely into place.

How should the Optical Nano Coating on this filter be cleaned to maintain full-spectrum neutrality?

Use a blower to remove dust, then gently wipe the glass with a microfibre cloth and optical cleaning solution using a circular motion.

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