K-F CONCEPT KF01.1146 Square Filter Ultra Coatings 800796462449 100MM ND64

( Brand: K-f Concept ), ( Manufacturer Part Number: KF01.1146 ), ( Part Type: Filter ), ( Photo Filter Effect Type: Neutral Density ), ( Photo Filter Factor: 64.0 ), ( Style: Nd ), ( Photo Filter Size: 82.0 ), ( Coating Description: Multi Coating ), ( Display Size: 100.0 ), ( Material: Optical Glass ), ( UPC: 800796462449 ), ( Package Dimensions Lxwxh: 5.75x5.67x1.42 Inches ), ( Weight: 0.51 Pounds )

Review K F CONCEPT 100 100mm Stop Square Filter Ultra Slim Hd Multi layer Coatings

The **K&F Concept KF01.1146 100mm ND64 Square Filter** is a high-performance neutral density (ND) filter designed to elevate the capabilities of photographers and videographers working with medium-format and full-frame DSLR, mirrorless, and cine cameras. Engineered with precision, this square filter features a **100mm x 100mm** size, making it an ideal choice for larger sensor systems where traditional round filters fall short. The **ND64** designation indicates an optical density of 64%, which translates to a **3-stop reduction in light**, allowing photographers to achieve slower shutter speeds without overexposing their images perfect for capturing silky waterfalls, creamy motion blur in landscapes, or extended exposures in low-light conditions. What truly sets this filter apart is its **multi-layer anti-reflection (AR) coating**, meticulously applied across all surfaces to minimize ghosting, flare, and internal reflections, ensuring razor-sharp images with maximum clarity and color fidelity. Constructed from **optically superior glass**, the filter maintains exceptional optical quality while resisting scratches and abrasions, thanks to its durable, scratch-resistant coating. The **square shape** not only accommodates a wide range of lens hoods and adapters but also allows for seamless integration with other square filters, such as polarizers or graduated ND filters, expanding creative possibilities without the need for additional adapters. Whether used in landscape photography, cinematic videography, or architectural shoots, this filter delivers consistent, professional results, making it a versatile and indispensable tool for serious content creators who demand the best in optical performance and versatility.

The **K&F Concept KF01.1146 100mm ND64 Square Filter (Multi-Layer Coatings)** is a popular neutral density (ND) filter designed for photography, particularly for long-exposure and slow shutter speed work. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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1. **High-Quality Optical Performance**

The filter is made with **multi-layer coatings**, which help reduce reflections, flare, and ghosting. This ensures sharper images and better contrast, especially in bright conditions where ND filters are typically used.

2. **Strong Neutral Density (ND64)**

An ND64 filter blocks **90% of light**, allowing for **10 stops of exposure** (equivalent to f/16 to f/1.4 at the same shutter speed). This is ideal for long-exposure photography, such as silky water, light trails, or cinematic b-roll, where you need to slow down the shutter without adjusting aperture or ISO.

3. **Square Shape with Step-Up Rings Included**

The square design is versatile it can be used with **step-up rings** to adapt to circular lens hoods or other square-to-circular filter systems. This makes it compatible with a wider range of lenses without needing additional square filters.

4. **Durable Construction**

The filter appears to be built with **optical-grade glass** and a sturdy metal frame, which should resist warping or scratching over time. The threaded edges ensure a secure fit on the lens.

5. **Affordable Compared to Brands Like B W or Lee**

While not as premium as high-end brands, this filter offers strong performance at a **lower price point**, making it a cost-effective choice for photographers who need a reliable ND filter without breaking the bank.

6. **Good for Video and Cinematography**

The consistent ND rating (ND64) is useful for videographers who need predictable exposure control across different lighting conditions.

7. **Easy to Clean and Maintain**

The glass surface is smooth, and the metal frame is simple to wipe down, reducing the risk of dust or smudges affecting image quality.

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1. **Potential Color Cast (Though Minimized by Multi-Layer Coatings)**

Some ND filters, especially cheaper ones, can introduce a slight **color shift** (e.g., blue or magenta tint). While the multi-layer coatings on this filter help mitigate this, it s still possible to notice minor inconsistencies in white balance, especially in high-contrast scenes. A **color calibration check** (e.g., shooting a gray card) is recommended.

2. **Square Filter May Not Fit All Lenses**

While the inclusion of **step-up rings** helps, some lenses (especially wide-angle or ultra-wide primes) may still require additional adapters or may not have a compatible hood. This can be cumbersome compared to circular filters, which are universally compatible with lens hoods.

3. **Potential for Vignetting**

Some square filters, when used with wide-angle lenses, can cause **vignetting** (darkening at the edges) if not properly centered. This is more noticeable with extreme wide-angle lenses (e.g., 14mm or 16mm) and may require careful alignment.

4. **Durability Concerns with Frequent Use**

While the filter is sturdy, **frequent attachment/detachment** (especially with step-up rings) can eventually loosen the threads or cause minor scratches. High-end brands often use more precise manufacturing, which may last longer with heavy use.

5. **No UV Protection**

This is a **pure ND filter** and does not include UV protection. If you shoot in environments with significant haze or dust (e.g., deserts, construction sites), a **UV filter** may still be necessary for additional protection.

6. **Limited Brand Reputation**

K&F Concept is a **budget-friendly brand** known for affordable gear, but it lacks the decades-long reputation of brands like **B W, Lee, or Hoya**. While this filter performs well, some photographers may prefer the **warranty and customer support** of more established brands.

7. **Potential for Light Leakage at Edges**

Some users report minor **light leakage** around the edges when used with very wide apertures (e.g., f/1.4 or f/2.8). This is usually subtle but can be noticeable in high-contrast scenes.

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The **K&F Concept KF01.1146 100mm ND64 Square Filter** is a **solid, budget-friendly option** for photographers and videographers who need a **reliable ND64 filter** without spending a premium. Its **multi-layer coatings** ensure good optical quality, and the **square design with step-up rings** makes it versatile for different lens setups. However, it is not without trade-offs **potential color casts, vignetting risks, and durability concerns** (compared to premium brands) should be considered.

If you prioritize **performance, affordability, and versatility**, this filter is an excellent choice. If you need **absolute neutrality, long-term durability, or premium customer service**, investing in a **B W, Lee, or Hoya ND filter** may be worth the extra cost.

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- You need a **strong ND64 for long exposures or video** on a budget.

- You already own **step-up rings** or are okay investing in them.

- You shoot in controlled environments where **color casts are minimal** (or can be corrected in post).

- You prefer **square filters** for their adaptability.

- You shoot **wide-angle or ultra-wide lenses** frequently (a **circular ND filter** may be better).

- You need **absolute color neutrality** (a **B W ND64 or Lee Big Stopper** might be preferable).

- You want **better durability and warranty support** (brands like **Hoya or NiSi** offer strong mid-range options).

**Final Verdict:** This is a **great value for the price**, especially for photographers who don t need the absolute best but want reliable ND64 performance. Test it in your workflow if color casts or vignetting are noticeable, you can always return it or pair it with a **neutral density gradient filter** for better control.

Details:

ND filters are good for rivers, waterfalls, and other bodies of water, especially under bright light. The longer exposure times allows for smoother water movements, shallower depth of field, and blurred motion. ND64 square filter provides 6 f-stop reductions,With only 2mm thickness,No color cast and made by premium Japanese AGC Optical glass. Source: Euro monitor, 2024 data.

Eliminates overly bright washed-out images and enables longer exposures to capture the beauty of time movement. Multi Layer coatings with metallic alloy film on both sides of clear glass - this coating process produces a true neutral image, free from infrared contamination flat curve. ND64 neutral density filter 4x4 /100mm, so it Compatible with Coking Z Series for DSLR Cameras Lens. The ND64 square filter with 28 multi-layer coatings, waterproof, scratch resistant, oil proof, effectively reduces glaring and ghosting while fit for the rigors of adventure photography.

part #: kf011146 prices

• $54.99-$129.99

specifications filtecam:

• brand: K-f Concept
• mpn: Kf01.1146
• part type: Filter
• photo filter effect type: Neutral Density
• photo filter factor: 64.0
• style: Nd
• photo filter size: 82.0
• coating description: Multi Coating
• display size: 100.0
• material: Optical Glass
• upc: 800796462449
• package dimensions lxwxh: 5.75x5.67x1.42 Inches
• weight: 0.51 Pounds

payments filtecam:

• wallet: Paypal
• other
• credit card: Mastercard

seller filtecam:

• city: Eugene, Oregon
• # reviews: 721
• rating: 100.0%

shipping filtecam:

• cost: $0.00
• service: Economy
• type: Fixed
• class: Economy
• transit: 4-8 Days

offer filtecam:

• quantity: 1
• options: Ship-to-home
• sold: 0
• started: March 12, 2026
• availability: In Stock

general filtecam:

• condition: New
• Cameras Photo > Lenses Filters > Filters

returns filtecam:

• policy: No Returns

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