• Heliopan ND-VARIO Slim Variable Neutral Density Filter
• Premium Rotatable Slim Brass Frame
• Protective Storage Case

Overview
The Heliopan ND-VARIO Type 2199 is a professional, German-made variable neutral density filter engineered for seamless exposure control in both video and still photography. It provides stepless regulation of light intensity from ND 0.3 to ND 1.8, effectively replacing an entire set of fixed gray filters.

This specific version features an ultra-sleek, slim brass profile built without a front thread, preventing edge vignetting while maintaining a highly compact setup. The filter mechanism utilizes two high-grade polarization foils layered between precision optical glass; rotating the outer ring smoothly alters the gray value across a wide creative spectrum.

For videographers using DSLR or mirrorless setups, it is crucial for locking in the ideal 1/50 or 1/60 shutter speed when shooting wide open under harsh sunlight. For photographers, it enables a shallow depth of field during bright midday portrait sessions or allows long-exposure effects that blur moving water and eliminate passing crowds from architectural shots.

• Continuous Density Control: Seamlessly adjusts light transmission from ND 0.3 to ND 1.8 without needing to swap filters.
• Wide Stop Range: Delivers an adjustable exposure reduction spanning 1 to 6 full stops.
• Non-Overbuilt Slim Profile: Ultra-compact brass construction fits cleanly onto your lens without adding unnecessary outer bulk.
• Lens Hood Friendly: Engineered slim design allows for continued use of standard matching lens hoods.
• Premium Brass Ring: Built with durable brass to provide smoother gliding properties and prevent binding or cross-threading.
• Cinematic Shutter Lock: Lets filmmakers maintain fixed frame-rate shutter speeds in bright environments while preserving wide apertures.

• Filter Type: Variable Neutral Density
• Heliopan Model: Type 2199
• Category: Variograufilter
• Manufacturer: HELIOPAN
• Density Range: ND 0.3 to ND 1.8
• Exposure Reduction: 1 to 6 Stops
• Filter Factor Range: 2x to 64x Extension
• Frame Material: Premium stable brass with matte black finish
• Frame Profile: SLIM
• Optical Construction: Two polarized optical glass foils in a rotatable assembly
• Wide Angle Limitation: Best performance at focal lengths 35mm and above; slight blue color shifts or cross-shaped shadows can occur near maximum density on wider lenses
• Country of Origin: Germany