NiSi Swift Add On Kit for NiSi 67mm Swift True Color VND 1-5 Stops (4 Stop ND + Black Mist 1/4)

This add-on kit extends an existing NiSi 67mm Swift True Color VND 1-5 Stop system rather than replacing it — it snaps onto the front of that variable ND to add more stops and a mist effect without buying a whole new filter. Once attached, you go from the base 1-5 stops up to a combined 1-9 stops of light control, useful when shooting into bright sun with a wide-open aperture. It's built for NiSi Swift System owners who want more range from filters they already have.

• Adds an ND16 (4 Stop) and Black Mist 1/4: pressed onto the front of an existing NiSi True Color 1-5 Stop VND to extend the system to 1-9 stops total.
• Press-on Swift System mounting: no separate filter thread needed on the VND itself — filters snap onto the front magnetically/by press-fit.
• Included adaptor ring: lets you mount the ND16 or Black Mist 1/4 directly to a lens on its own, without the VND base filter.
• Vignetting-tested: no vignetting at 18mm with one filter stacked on the VND, or 20mm with both add-on filters stacked.
• Kit contents: ND16 (4 Stop), Black Mist 1/4, adaptor ring, lens cap, and case.