52mm Round Soft Graduated ND32 Filter with Double-sided Coating and HD Resolution for Professional Photography

Price Negotiable

Price: $6.22 - $20.18 / Piece

MOQ: 100

Delivery Time: 15-30 Working day

Brand: OEM/ODM

Product Description

BST SGND Filter Features

Ideal ratio of ND, transition, and clear areas with even, natural gradient
Double-sided GND coating with consistent production quality and near-zero color deviation
Precise ND value stops for accurate light control

Product Specifications

Parameter	Details
Glass Material	AGC / Germany SCHOTT / Corning / other designated brands
Filter Lens Thickness	0.55mm / 0.7mm / 0.8mm / 1.1mm / 1.3mm / 1.5mm / Custom
Filter Lens Resolution	HD Resolution
Coating	Double-sided SGND+AR (Anti-reflection), Double-sided AF (Waterproof, oil proof, scratch proof)
Frame Material	Aluminum / Copper
Frame Interface	Thread / Magnetic
Frame Thickness	4.5mm / 4.75mm / 5.5mm / 5.9mm / 7.0mm / 7.5mm (Customizable)
ND Specifications	ND2/4/8/16/32/64 standard, custom ND values available
Common Product Sizes	Φ37mm to Φ150mm diameter range
Customization	Available for all specifications

ND Filter Technical Ratings

F-stop Reduction	Optical Density	ND Number
0	0.0	0
1	0.3	ND 2
2	0.6	ND 4
3	0.9	ND 8
4	1.2	ND 16
5	1.5	ND 32
6	1.8	ND 64
7	2.1	ND 128
8	2.4	ND 256
9	2.7	ND 512
10	3.0	ND 1024

Product Quality & Manufacturing

BST maintains a complete industrial chain from R&D to manufacturing with a thousand-level clean room facility. The company specializes in optical product development with core team members having over 15 years of industry experience.

BST SGND filter product quality demonstration showing optical clarity and construction

Close-up view of BST SGND filter coating and surface treatment

BST filter showing precise ND gradient transition and optical performance

Custom Packaging & Delivery

We provide comprehensive packaging solutions including custom cartons, product boxes, cleaning cloths, manuals, and stickers. Delivery options include forwarding to customer-designated warehouses or through UPS and other logistics partners.