K-F CONCEPT KF01.2449 Square Stops Filter Cinema Neutral 4FTFT 5.65FTFT ND1.2

( Brand: K-f Concept ), ( Manufacturer Part Number: KF01.2449 ), ( Part Type: Filter ), ( Itemlength: 144 ), ( Itemweight: 334 ), ( Itemwidth: 102 ), ( Packageheight: 29 ), ( Packagelength: 193 )

Review K F CONCEPT 4ftft 5.65ftft Square Stops Filter Cinema Neutral

The **K&F Concept ND1.2 (1.2-Stop) Square Cinema Neutral Density Filter** (Model KF01.2449) is a high-quality, professional-grade optical accessory designed to elevate the cinematic experience by providing precise control over light exposure during filmmaking, photography, or video production. Crafted with meticulous attention to detail, this square filter measures **4 feet by 4 feet (4ft x 4ft)** and is engineered to seamlessly integrate into large-format lenses, such as those found on high-end cinema cameras, drones, or professional video rigs. Its **5.65 feet by 5.65 feet (5.65ft x 5.65ft)** mounting frame ensures compatibility with a wide range of lens sizes, making it a versatile solution for both studio and on-location shoots. The filter s **ND1.2 (neutral density) rating** delivers a **1.2-stop reduction in light**, allowing filmmakers to achieve slower shutter speeds without sacrificing image clarity ideal for capturing smooth motion effects, such as creamy cinematic b-roll or long-exposure shots in bright daylight. Constructed from **optically pure glass**, this filter maintains exceptional color accuracy and minimal light distortion, ensuring that the natural tones and contrast of your footage remain intact. Its **square shape** and **durable metal frame** provide stability and ease of installation, while the **low-reflection coating** minimizes flare and ghosting, even in high-contrast lighting conditions. Whether used to balance exposure in wide-open apertures, extend depth of field, or create visually striking slow-motion sequences, this filter is a reliable tool for professionals seeking precision and consistency in their visual storytelling. Built to withstand rigorous use, the K&F Concept ND1.2 Square Cinema Neutral Density Filter is a premium investment for creators who demand the highest standards in optical performance and durability.

### **Pros and Cons of buying a K&F Concept ND1.2 (4-Stop) Square Filter (4ft x 5.65ft)**

1. **High-Quality Neutral Density (ND) Filter** The ND1.2 filter blocks 75% of light, allowing for slower shutter speeds in bright conditions without altering color balance. This is ideal for long exposures, cinematic motion blur, or low-light shooting with high ISO settings.

2. **Square Format for Versatility** Unlike round filters, square filters can be rotated or combined with other filters (e.g., polarizers, gradients) for more creative control. This makes them useful for both stills and video work.

3. **Durable Construction** K&F Concept is known for using high-quality glass and robust metal frames, reducing the risk of scratches or warping over time.

4. **Good Light Transmission** Unlike very dense ND filters, the ND1.2 still allows enough light through to maintain proper exposure without requiring excessive ISO or underexposure.

5. **Budget-Friendly Compared to Premium Brands** While not as expensive as B W or Lee, it offers professional-grade performance at a lower cost, making it a practical choice for hobbyists and professionals alike.

6. **Easy to Attach/Remove** The filter s size (4ft x 5.65ft) is standard for many medium-format and large-sensor cameras, and it fits most filter holders or can be mounted directly on the lens.

7. **Useful for Cinematic Effects** The 4-stop reduction is perfect for achieving smooth motion blur in video, particularly in outdoor or high-contrast environments.

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1. **Potential for Light Leaks or Scratches** Cheaper filters can develop scratches or light leaks over time, especially if not handled carefully. While K&F Concept is better than very low-end brands, it s not entirely immune to wear.

2. **Color Cast Issues** Some users report slight color shifts (though minimal in a "neutral" filter), which may require calibration in post-processing. High-quality ND filters should have minimal color deviation, but this varies by batch.

3. **Bulkiness and Weight** The large square format adds weight to your setup, which may be cumbersome for travel or handheld shooting. If you frequently switch between filters, this could become a hassle.

4. **Compatibility Concerns** While the dimensions are standard, ensure your camera/lens system can accommodate the filter without vignetting or obstruction. Some large-sensor cameras (e.g., medium format) may have slight edge vignetting.

5. **No UV Protection** Unlike some filters that include UV protection, this is purely an ND filter. If you shoot in dusty or polluted environments, additional protection may be needed.

6. **Limited Durability in Extreme Conditions** If exposed to extreme heat, cold, or humidity, the adhesive or frame could degrade over time. Proper storage is essential.

7. **Not Indispensable for All Shooters** If you primarily shoot in controlled environments (e.g., studio) or use very fast lenses, a 4-stop ND may not be necessary. It s most valuable for outdoor, high-contrast, or motion-heavy work.

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The **K&F Concept ND1.2 (4-stop) square filter** is a **solid, cost-effective choice** for photographers and videographers who need a reliable neutral density filter for long exposures, cinematic motion blur, or low-light shooting. It strikes a good balance between performance and affordability, making it suitable for both beginners and intermediate users.

However, if you prioritize **absolute color neutrality, scratch resistance, or long-term durability**, investing in a premium brand (e.g., B W, Lee, or Formatt-Hitech) may be worth the extra cost. For most users, this filter delivers **excellent value** without sacrificing too much quality.

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- You need a **versatile, square-format ND filter** for creative long exposures or cinematic video work.

- You re working with a **budget** but still want professional-grade performance.

- You frequently shoot in **bright outdoor conditions** where slower shutter speeds are desirable.

- You plan to **combine it with other filters** (e.g., polarizers, gradients) due to its square shape.

- You require **absolute color accuracy** and are willing to pay for premium brands.

- You shoot **mostly in controlled environments** where ND filters aren t essential.

- You prefer **round filters** for easier attachment/detachment.

- You re concerned about **long-term durability** and want the most scratch-resistant option.

**Final Verdict:** **Highly recommended for its price-to-performance ratio**, especially for photographers and videographers who need a reliable ND filter without breaking the bank. Pair it with a **filter holder** and **protective case** to maximize its lifespan.

Details:

Durable Easy-Maintain Coatings: Both sides feature nano-coating, making it scratch-resistant, waterproof, oil-proof and fingerprint-resistant The included leather pouch ensures safe storage transport, ideal for run-and-gun filming. K F CONCEPT 4'' x 5.65'' Square ND1.2 4 Stops Filter Cinema Neutral Density Compatible with Tilts, Small Rig Matte Box Ultra-Slim Optical Glass ND16 28-Multi Coated. Source: Euro monitor, 2024 data. 0.2% Reflectivity for Cleaner Footage: With ultra-low reflectivity, it minimizes internal reflections and flare from studio or outdoor lighting This delivers higher contrast, richer shadows cleaner highlights HDR log-format video.

Compatibility Usage Notes: designed exclusively for matte box use, it works with lenses of any focal length when mounted A versatile exposure tool DSLR, mirror less and cinema cameras across narrative, documentary commercial projects.

part #: kf012449 prices

• $71.23-$72.79

specifications filtecam:

• brand: K-f Concept
• mpn: Kf01.2449
• part type: Filter
• itemlength: 144
• itemweight: 334
• itemwidth: 102
• packageheight: 29
• packagelength: 193

offer filtecam:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: April 22, 2026
• sold: 0

returns filtecam:

• policy: Returns Accepted
• paid by: Buyer
• method: Money back
• time: 30 Days

general filtecam:

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

seller filtecam:

• # reviews: 1108
• rating: 99.8%
• city: Brooklyn, New York

shipping filtecam:

• type: Fixed
• class: Expedited
• cost: $0.00
• transit: 3-6 Days
• service: Expedited

payments filtecam:

• wallet: Apple-pay
• other
• credit card: Discover

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