Heliopan ND Filter 2090 | ND 0.9 Dark Density | Slim Brass | Coated | Made in Germany

Product Overview

The Heliopan ND 0.9 Neutral Density Filter provides a 3-stop (8x) light reduction across the entire visible spectrum while maintaining true color neutrality and contrast. Ideal for longer exposures, motion blur, and shooting with wider apertures in bright conditions, this filter delivers professional optical performance for both photography and video.

Key Features

• ND Density: ND 0.9 (3 Stops / 8x light reduction)

• Exposure Extension Factor: 8x

• Light Transmission: Approx. 12.5%

• Aperture Compensation: +3

• Glass: Premium SCHOTT optical glass

• Mount: Precision slim brass frame with front filter thread

• Coating: 4-fold multi-coating (reflection-reducing, water & dirt repellent)

• Wide-Angle Compatible: Slim 4 mm profile minimizes vignetting

• Scratch-Resistant & Color Neutral

• Made in Germany (Munich)

Why Choose an ND 0.9 Filter?

An ND 0.9 filter is ideal when stronger light control is needed:

• Create smooth motion blur in water, clouds, and moving subjects

• Shoot wide open apertures in bright daylight for shallow depth of field

• Control exposure for landscape, architecture, and urban photography

• Maintain proper shutter speed for cinematic video and drone footage

• Reduce rolling shutter artifacts and harsh highlights in bright conditions

Heliopan SLIM Brass Mount

Heliopan’s slim brass mount is precision-machined for durability and reliability. Brass resists deformation, minimizes thread binding, and maintains stability across temperature changes. The blackened interior reduces internal reflections, and the front thread allows stacking filters or attaching lens hoods and accessories.

Heliopan Optical Quality

Manufactured in Munich, Germany, Heliopan filters are known worldwide for exceptional craftsmanship. The fully polished SCHOTT glass ensures maximum sharpness and neutral color reproduction, while the proprietary 4-layer coating improves contrast, reduces flare, and makes cleaning easier.

Specifications

• Filter Type: Neutral Density (ND)

• Density: ND 0.9

• Stops: 3

• Extension Factor: 8x

• Filter Type Number: 2090

• Coating: 4-fold

• Mount Material: Brass (Slim)

• Front Thread: Yes

• Country of Manufacture: Germany

⚠ Important Notice:
Neutral Density filters are not suitable for direct visual sun observation. They do not block UV or IR radiation harmful to the eyes.