The 49mm Formatt Hitech 49mm 6-Stop ND Filteris a solid neutral density filter providing a 6-stop reduction in exposure. This 1.8 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or longer shutter speed than normally required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily.

The design of this filter has been optimized for use with digital sensors and promote nearly flat attenuation of visible, UV, and infrared light. Due to imaging sensors' greater susceptibility to infrared light, compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times. This filter provides a high level of neutrality across all three spectrums in order to eliminate color casts and ensure cleaner, truer blacks.

Applied to the outside of the Schott Superwite glass construction is a 15-layer Firecrest multicoating, which helps to minimize reflections and flare in order maintain truer colors and contrast. The multicoating is also scratch resistant and hydrophobic to benefit the overall durability of the filter. The filter is set within a 5.5mm-thick SuperSlim aluminum filter ring, which features front threads for stacking additional filters or attaching a lens cap.

This filter is designed specifically for photography applications. This filter is not suitable for direct solar viewing with the naked eye, including with optical viewfinders.

1.8 Optical Density    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch Resistant    Schott Superwite Glass    SuperSlim 5.5mm-Thick, Stackable Ring    Designed for Solar Photography    Increase Exposure Length    Greater Control Over Exposures    Neutral Results Across All Spectrums    Includes Pouch

ND 1.8 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 6-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Attenuates infrared light, as well as visible and UV wavelengths, to maintain color neutrality and suppress color casts due to increased exposure lengths.

The 15-layer Firecrest coating has been applied directly to the outside of the filter glass by way of a vacuum-formed, hard-coated, electrolytic process. The multicoating is water and scratch resistant for greater overall durability.

Schott Superwite glass promotes maintained image clarity and is set within a 5.5mm-thick SuperSlim aluminum filter ring.

Related Questions and Answers

Q: 1. Is this compatible with Lee 100x100 Foundation holder kit ? Do I need any additional blades to fit this glass filter?

A: Yes it is compatible with Lee 100x100 i only have 2 blades on myself ,you will not have any problem at all .Does that help

Q: 2. Does this come with a lens cap?

A: Unfortunately, a cap is not included with this filter.

Q: 3. Is this filter compatible with 16-50 mm lens (Sony a6000 kit lens)? Thank you.

A: Because the 16-50 would need a 40.5mm filter, to use this filter you would need a step-up ring.

Q: 4. Will this work in the Kase k9 100x100mm filter holder ?

A: The K&F Concept 100 x 100mm ND8 Filter (3-Stop) is compatible with the Kase K9 Filter Holder.

Q: 5. does this have a front thread to take the 82mm circ. polarizer included in some of the formatt hitech kits?

A: No

Q: 6. Is this one of the Hoya HMC filters with box stating "Do not use any chemical cleaners for cleaning only a soft cotton cloth allowed"?

A: I looked at the box and I don't see that message written on it.

Q: 7. Can another filter be stacked on top of this?

A: Yes, Kolari Vision Pro IRND Filter (95mm, 2-Stop) has a 95mm front and back threads. You can connect filters or lens caps to the front threads.

Q: 8. Does this come with a gasket seal, and is it already installed? Will it fit the Lee holder with the gasket seal? If it comes with a self install seal, how does the seal attach , does it stay I. Place?

A: The Haida 100 x 100mm NanoPro MC ND 1.8 Filter (6-Stop) does not come with a gasket seal. This filter has a thickness of 2mm for use with compatible square filter holders that accept filters with a thickness of 2mm.

Q: 9. Does this have a front filter thread?

A: Yes, Kolari Vision Pro IRND Filter (95mm, 2-Stop) has 95mm front and back threads to connect filters and lens cap in front.

Q: 10. Do these filters have the foam at the back to block light like the Lee big and little stopper filters? Will they fit in the Lee filter holder?

A: Yes a foam gasket is on the back of this filter and it will fit the Lee 100mm holders.