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NiSi 111085 49mm Adapter for M75 Filter System — main product image
NiSi

NiSi 111085 49mm Adapter for M75 Filter System

★★★★★4.5 (10 reviews)

NiSi's aluminum-alloy 49mm adapter ring lets smaller-threaded lenses connect securely to the M75 75mm filter system.

$11.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The NiSi 111085 is a 49mm-to-67mm step-up adapter ring engineered specifically for the NiSi M75 75mm filter system. If your lens has a 49mm filter thread—common on compact mirrorless primes and smaller zoom lenses—this ring bridges the gap to the 67mm main adapter ring that the M75 filter holder mounts onto. The result is a secure, wobble-free connection that lets you take advantage of NiSi's 75mm square and circular filters without needing a larger-threaded lens.

Constructed from aluminum alloy, the adapter is both lightweight and durable, resisting cross-threading and corrosion over extended use. Its slim profile keeps added bulk to a minimum, which matters when pairing it with the compact lenses that typically carry 49mm threads. For landscape and long-exposure photographers who shoot with smaller-format kits, this adapter is an essential link in a modular filter workflow built around the M75 system.

Key Features

Adapts to the 67mm main adapter ring on the NiSi M75 System

For lenses with 49mm standard filter threads

Aluminum-Alloy Construction

49mm-67mm Step-up ring

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Specifications

Brand
NiSi
Model
111085
Lens Thread Size
49mm
Adapter Output Size
67mm
Compatible System
NiSi M75 75mm Filter System
Material
Aluminum Alloy
Type
Step-Up Adapter Ring

Pros & Cons

👍 Pros

  • Machined aluminum-alloy build provides a durable, corrosion-resistant connection
  • Enables the full NiSi M75 filter system on compact lenses with 49mm threads
  • Lightweight and low-profile, adding virtually no extra bulk to smaller lens setups
  • Straightforward step-up design threads directly onto the lens without tools

👎 Cons

  • Only compatible with the NiSi M75 system—cannot be used with other filter holders
  • Stepping up from 49mm to 67mm on very small lenses may increase the risk of vignetting at wide angles
  • Does not include the M75 main adapter ring or filter holder, which must be purchased separately

Frequently Asked Questions

It steps up a 49mm lens filter thread to 67mm, which is the size required to attach the NiSi M75 filter holder's main adapter ring to your lens.
No. It is specifically designed to interface with the 67mm main adapter ring on the NiSi M75 system and is not guaranteed to fit other filter holders.
The adapter is very lightweight. As a thin step-up ring, it adds minimal bulk or weight to compact lenses with 49mm threads.
It is intended to be used on its own between a 49mm lens and the M75 main adapter ring. Stacking additional rings could introduce vignetting or an insecure fit.

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