Item Descriptions:

size:

150 * 170 mm

| Color:

Soft nano GND 8 (0.9)

GND filter

The GND filter is a half ND filter, in English it is called Graduated Neutral Density Filters.

Human eyes can adapt their eyes even in environments where there is a large contrast difference, but each can be clearly recognized, but since the dynamic range of the imaging element of the camera is narrow, if the subject's contrast difference is too large,

It may cause white jump or blackout.

By using the GND filter, it is possible to dim the bright part and adjust the overall exposure balance without losing the gradation of the subject.

Commonly used GND filters are soft type, hard type and (Reverse GND) three kinds.

The world's first rectangular nano-coated half-silvered ND filter uses environmentally friendly HD optical glass "H-K9L".

To prevent distortion, HD optical glass "H - K9L" anneals to eliminate glass stress.

In addition, by using optical polishing technology, high parallelism of the glass surface is improved to ensure high resolution.

By applying double-sided ND optical coating, it is possible to transmit uniformly from visible light to near infrared light.

Dielectric coating removes static electricity on the glass surface to make it less dusty and has strong acid resistance to organic solvents and can prevent color fading over a long period of time.

When choosing, decide whether it is high resolution, whether there is little color coverage, whether flare occurs or not.

For example, there are five kinds of soft type: resin dyeing type, sandwich type, glass · ND gray glass adhesive type, single side coating type, NiSi double-sided nanocrystal coating.

Features:

• Please enter model number Confirm this is compatible:
• High resolution: HD optical glass H - K9L is adopted, and the flatness of the filter is maintained by double - sided ultra - precision polishing.
• The resin and adhesion layer shrinkage deformed due to temperature change and affect flatness.
• It is less likely to suffer from color sticking: Using proprietary technology gradually falling coating, it can transmit uniformly from ultraviolet rays to near infrared rays.
• Uneven transmittance of visible light causes color failure.
• The resin product fads with time, and it is not recommended because the adhesive type product is easy to come off.
• Flare prevention: By using a gradual coating on both sides of the filter, it is possible to avoid high reflection of metallic aluminum coating and loam coating.
• In addition, maintenance is easy and cleaning can be done easily.
• Since the boundary is connected naturally with a gradation that makes the boundary between light and dark gradually brighter, it is a natural finish close to the appearance.
• NiSi square soft nano GND (8) 0.9 optical glass 150 * 170 mm

Product information:

Shipping Weight: 308 g

Package Dimensions: 4.29 x 21.49 x 22.50 cm