K&F KF01.1830V1 CONCEPT 49MM, ND3-1000, ultra-thin variable ND, Waterproof, Green Coated

The K&F Concept KF01.1830V1 49mm Variable ND Filter (ND3–ND1000) is an ultra-thin, multi-coated variable neutral density filter that provides adjustable light reduction from 1.5 to 10 stops, enabling greater exposure control for photography and videography in bright conditions while maintaining image clarity, color accuracy, and minimal reflections.

The K&F Concept KF01.1830V1 49mm Variable ND Filter (ND3–ND1000) is a versatile optical accessory designed for photographers and videographers who require precise exposure control without compromising image quality. Featuring a variable density range from ND3 to ND1000 (approximately 1.5 to 10 stops), it allows users to reduce incoming light smoothly by rotating the filter, making it ideal for long exposure photography, motion blur effects, and shooting with wide apertures in bright environments.

Constructed from high-quality Japanese optical glass, the filter ensures excellent transparency and sharpness while minimizing color shift. Its double-sided multi-layer coating effectively reduces reflections, flare, and ghosting, while also providing resistance to water, dust, mold, and scratches. This enhances durability and ensures consistent optical performance even in challenging outdoor conditions.

The ultra-slim aluminum alloy frame (approximately 7.4 mm thick) is engineered using CNC machining for precision and durability. Its slim profile helps prevent vignetting, especially when used with wide-angle lenses. The non-slip frame design allows for easy handling, while the smooth 360-degree rotation mechanism enables fine-tuned and repeatable exposure adjustments.

Designed for lenses with a 49mm filter thread, this variable ND filter is suitable for a wide range of compact lenses used in photography and videography setups. It is particularly useful for landscape photography, cinematic video production, and any scenario requiring controlled exposure and motion effects.

Key Features

• Variable ND range from ND3 to ND1000 (approx. 1.5–10 stops)

• Premium Japanese optical glass for high clarity and low distortion

• Double-sided multi-layer coating to reduce reflections and improve durability

• Waterproof, scratch-resistant, dust-resistant, and anti-mold coating

• Ultra-thin 7.4 mm frame to minimize vignetting

• 360° smooth rotation for precise exposure control

• Lightweight CNC-machined aluminum alloy frame with non-slip grip

• Designed for lenses with 49mm filter thread