When it comes to capturing professional-quality visuals, having the right ND (Neutral Density) or Variable ND (VND) filter can completely transform your workflow. Whether you're filming in bright sunlight or shooting long exposures in nature, ND filters help you maintain creative control. In this guide, we compare Freewell’s top filter systems—V2 Hybrid VND/CPL, K2 Futureproof, and M2 Magnetic Quick Swap—to help you choose the best ND filter system for photography or filmmaking.

What Are ND Filters and Variable ND Filters?

ND filters reduce the amount of light entering your lens, allowing you to shoot with slower shutter speeds or wider apertures even in bright environments. Variable ND filters (VNDs) offer adjustable light reduction, letting you dial in the perfect exposure without switching filters. They're especially useful for filmmakers and hybrid shooters who require flexibility on the go.

Best Variable ND Filter with Built-in CPL: Freewell V2

The Freewell V2 Hybrid VND/CPL system is an innovative 2-in-1 filter combining a Variable ND filter and Circular Polarizer (CPL). Designed to reduce color shift and cross-polarization, it's ideal for high-contrast environments like landscapes or water scenes.

• Key features: True color rendering, CPL built-in, magnetic mount

• Best for: Cinematic video, polarized reflections, landscape photography

Futureproof ND Filter System for Creators: Freewell K2

The Freewell K2 Futureproof system is the most modular and future-ready VND filter system on the market. With support for gradient filters, glow mist, CPL, and both fixed and variable ND, it’s the all-in-one solution for hybrid shooters who wants the to have feature of matte box but without the bulk of matte box. 

• Key features: Modular magnetic mount, support for gradients, ND1000, and CPL.

• Best for: Professionals needing multiple filter types with one mount

Magnetic ND Filter Quick Swap System: Freewell M2

The Freewell M2 Magnetic Quick Swap filter system is designed for speed and simplicity. Ideal for run-and-gun creators, it supports 1 second quick swaps between ND levels without color coding confusion.

• Key features: Color-neutral ND filters, quick identification, compatible with lens hoods

• Best for: On-the-go videographers who need rapid changes in exposure

Comparison Chart: V2 vs K2 vs M2 ND Filter Systems

 

Feature	V2 Hybrid VND/CPL	K2 Futureproof	M2 Quick Swap
Filter Types	VND + CPL	VND, ND, Gradient, CPL, Glow Mist	ND, CPL, Mist
Mount System	Magnetic	Magnetic + K2 Island	Magnetic
Color Accuracy	True Color Coating	True Color/Color Neutral	Color Neutral
Adjustable Stops	3–7 VND	1–5, 6–9 VND	ND, CPL, Mist
Optional Filters	Glow Mist, Snow Mist, Streak	CPL, Glow Mist, ND1000, Gradient	ND, CPL, Mist
Compatibility	82mm, base rings available	52–82mm threads	82mm, 77mm, 67mm step-up rings available
Ideal Use Case	Filmmaking, travel, polarizing shots	Multi-purpose for photo + video	Quick filming transitions

Which ND Filter System Is Best for You?

If you're looking for:

• An all-in-one VND + CPL solution → Choose the V2 Hybrid VND/CPL

• A futureproof modular system → Go for the K2 Futureproof

• A speed-based ND filter swap system → Opt for the M2 Magnetic Quick Swap

FAQ: ND & Variable ND Filter Buyers

 

1. What is the difference between ND and Variable ND filters? ND filters are fixed-strength light blockers. Variable ND filters allow you to adjust exposure between multiple stops.

2. Which is better for video: ND or VND filters? VND filters are more versatile for video since you can adjust exposure on the fly.

3. Are Freewell ND filters color accurate? Yes, all Freewell filters use true color or color-neutral technology to prevent shifts.

4. Can I use these filters on different lens sizes? Yes. All three systems come with standard thread sizes or adapter rings from 52mm to 82mm.

5. Can I stack ND filters with these systems? K2 allows stacking gradient + ND + CPL, M2 allows stacking filters , V2 allows stacking the optional filters.

6. Are the V2, K2, and M2 systems compatible with each other? No, these filter systems are not cross-compatible. Each has a unique magnetic or mechanical mounting design tailored to its specific filter sizes and accessories, So kindly pick all the related accessories from their specific category. 

Best ND Filters for Every Creator: Final Thoughts

Whether you’re a landscape photographer, content creator, or filmmaker, having the right ND or Variable ND filter system can dramatically improve your footage. Freewell offers three excellent systems tailored for different needs—from the ultra-flexible K2, to the polarizing power of V2, to the fast-paced shooting benefits of M2. Choose your system based on how and where you shoot, and elevate your creative control with confidence.