Product Descriptions：
| Product Name: | ND4 filter |
| Function: | Light attenuation |
| Step: | 1/4 |
| Optical Density: | 0.6 |
| Mounting status: | unmounted |
| Average Transmittance (%) : | 25% |
| Surface Quality: | 60/40 scratch-dig |
| Color: | Grey |
| Shape: | Square |
| Dimension (mm): | 80*80mm |
| Thickness (mm): | 1.0mm |
| Substrate: | Optical Glass |
| Remark: Support customized. | |
What is an ND4 Neutral Density Filter?
An ND4 neutral density filter reduces the amount of light entering the camera lens to one-quarter of the original level without significantly changing the image color.It reduces visible light evenly across different wavelengths, helping control image brightness while maintaining natural color balance. In simple terms, an ND4 filter reduces light intensity without changing the overall color of the image.
Related products:
Neutral Density Filter, ND filter, Reflective type, Size 105*105*0.7mm, Support Customized
Shenzhen Hengda Liyuan Optoelectronics introduced advanced optical vacuum technology that apply depositing nano-materials through ion-assisted evaporation onto a multilayer hard film in a high vacuum environment which the coating layer is firm and has good tightness and small bandwidth drift. The company have been focus on optical coating for more than 17 years ,and the company offer one-stop optical filters solution including Narrow Bandpass Filters, IR cut-off Filters, Longpass Filters, Shortpass Filters, Notch Filters, ND filters, Star filters and Optical sapphire block.
Remark：Because the interference type filter varies its spectral performance at different angles, the spectral parameters usually determine its appearance color; moreover, the pictures in this link may originate from various shooting angles, so the actual color of the parts should therefore refer to the final spectral parameters required.
