Fotodiox Pro 145mm Neutral Density 16 Filter - 4-Stop Control

In this review the Fotodiox Pro 145mm ND16 filter is evaluated for photographers who need reliable, even light reduction without color shifts. It is primarily for landscape and long exposure shooters who want to slow shutter speeds or open apertures in bright conditions, and its biggest advantage is a true neutral density effect combined with a double-threaded, thin design that reduces the risk of vignette when used with WonderPana 145 and 66 systems. The review focuses on build quality, optical neutrality and system compatibility.

Key Features

• True Neutral Density: The ND16 delivers a consistent 4-stop reduction so photographers can slow shutter speeds or use wider apertures in bright light with predictable exposure changes.
• Premium Grade Optical Glass: The filter glass is built to maintain image clarity and minimize softening, which helps preserve fine detail in landscape and architectural shots.
• Multi-Coated Optic: The coating corrects for color balance and reduces surface reflections to keep tones accurate and lower flare in challenging light.
• Double Threaded Thin Design: Both front and rear 145mm x 1mm threads and a reduced thickness help avoid vignette when mounted in WonderPana Classic or Free Arc 145mm holders.
• Anodized Aluminum Ring: The premium grade anodized filter ring provides a durable, lightweight mount that resists corrosion and handles repeated attachment and removal.

Who It's For

The Fotodiox Pro 145mm ND16 is aimed at serious landscape, architecture and long exposure photographers who already use large-format filter holders such as the WonderPana 145 or 66 systems and need a neutral, repeatable 4-stop reduction. Its thin, double-threaded construction is especially useful for those combining multiple large filters where vignette is a concern.

Photographers who use smaller screw-in filters or who do not own a compatible 145mm holder should look elsewhere, since this product is designed for system-style filter workflows and large-format optics rather than small body lens-only setups.

Pros & Cons

Pros

• True neutral density effect gives predictable 4-stop exposure control without obvious color cast.
• High quality optical glass and multi-coating preserve detail and reduce reflections.
• Thin, double-threaded design minimizes vignette in WonderPana 145mm and Free Arc setups.
• Durable anodized aluminum ring for reliable mounting and handling in the field.

Cons

• Intended for large 145mm systems, so it is not suitable for photographers who need small screw-in filters.
• Fewer customer impressions included in available material, so real-world user notes on color neutrality are limited here.

Specifications

Filter Type	Neutral Density (ND16), 4-stop
Glass	Premium Grade Optical Glass, multi-coated
Thread	145mm x 1mm front and rear (double threaded)
Filter Ring	Premium grade anodized aluminum
Compatibility	Works with WonderPana 145 and WonderPana 66 systems
Thickness	Thinner than standard to minimize vignette
Warranty	24 month manufacturer warranty

Our Verdict

The Fotodiox Pro 145mm ND16 is a practical choice for photographers using large-format filter holders who need a reliable 4-stop neutral density option. Its optical quality, multi-coating and double-threaded thin profile make it a good value for landscape and long exposure work where avoiding vignette and preserving color balance are important.

Frequently Asked Questions

Will this fit my WonderPana 145 holder?
Yes, it is designed to work with WonderPana 145 and also compatible with WonderPana 66 systems when used as specified.

Does the filter change color balance?
The optic is multi-coated to correct for color balance and minimize reflections, so color shift is minimized under normal use.

Is the filter durable for field use?
The premium grade anodized aluminum ring and optical glass construction provide solid durability and a 24 month manufacturer warranty for peace of mind.