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BST Variable ND2-400 49mm Neutral Density Filter with 8.3mm Ultra-Thin Frame and HD Resolution

Name: BST Variable ND2-400 49mm Neutral Density Filter with 8.3mm Ultra-Thin Frame and HD Resolution
Brand: Bright Shadow Technology Ltd.

Professional variable neutral density filter featuring ultra-thin 8.3mm frame to prevent vignetting on wide-angle lenses. Offers ND2-400 density range, minimal color cast, and double-sided AR+AF coatings. Customizable sizes from Φ37mm to Φ150mm with thread or magnetic mounting options. Ideal for photographers and videographers requiring precise exposure control.

Place of Origin HuiZhou,GuangDong, China

Glass Material AGC /Germany SCHOTT /Corning / Other designated brands

Size Φ37~Φ150mm/Others

Packaging Details Plastic box /iron box+carton /other

Model Number Variable ND filter

Supply Ability 10000 Pieces /Month

variable speed motor variable speed drive variable frequency drive

Product Description

BST Variable ND2-400 49mm Neutral Density Filter

Professional variable neutral density filter designed for photographers and videographers, featuring ultra-thin 8.3mm frame thickness and minimal color cast for superior image quality.

Key Features

Full HD resolution with minimal color cast
Ultra-thin 8.3mm frame prevents vignetting on wide-angle lenses
Limited ND stop eliminates X-pattern artifacts
Available in ND2-400 density range

Technical Specifications

Parameter	Specification
Glass Material	AGC / Germany SCHOTT / Corning / other designated brands
Filter Lens Thickness	0.55mm / 0.7mm / 0.8mm / 1.1mm / 1.3mm / 1.5mm / Others (4 pieces per filter)
Filter Resolution	HD Resolution
Coating	Double-sided AR (Anti-reflection) + AF (Waterproof, oil proof, scratch proof)
Frame Material	Aluminum / Copper
Frame Interface	Thread / Magnetic
Frame Thickness	8.3mm / 9.2mm / 9.5mm / 11.5mm (Customizable)
Frame Structure	Unlimited (360° rotation) or Limited (restricted rotation)
ND Specifications	ND2-32 / ND2-128 / ND2-400 / ND3-1000 / ND64-1000 / ND2000-ND4000 (Customizable)
Frame Surface Treatment	Anodized aluminum / Blackened copper / Custom colors
Printing Method	Laser engraving / Screen printing
Common Product Sizes	Φ37mm to Φ150mm (Customizable)

Product Images

BST Variable ND2-400 filter showing professional build quality and compact design

Close-up view of ND filter glass and coating details

Variable ND filter demonstrating rotation mechanism and frame construction

Professional photography application of BST ND filter

Filter size comparison and compatibility demonstration

BST ND filter packaging and accessory components

Custom printing and engraving options available

Industrial manufacturing facility and quality control processes

Customization & Packaging

We provide comprehensive customization services including packaging design, carton production, cleaning cloths, instruction manuals, and various stickers according to customer requirements.

Professional packaging solutions for BST optical products

Manufacturing Excellence

Bright Shadow Technology Co., Ltd. operates from a thousand-level clean room facility with over 15 years of optical product expertise, offering ODM and OEM services with rapid response times and consistent mass production quality.