The 72mm Hitech Firecrest ND Filter 72mm 13-Stopis a solid neutral density filter providing a 13-stop reduction in exposure. This 3.9 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.

3.9 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 3.9 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 13-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. Can you layer this filter with other filters?

A: Yes, but note that this filter has 52mm threads in the rear where it attaches to the lens and 55mm on the front to accept additional filters or a lens cap.

Q: 2. Made with optical glass? Quality of product?Any suggest what I can purchase in the $100 range?

A: It is a quality product made with multi-coated filter. For the money you can't get a better filter and it's just as good as any other filter under $100.00

Q: 3. Will this fit a 18-55mm nikon lens?

A: No, the Nikon 18-55mm is a 55mm lens filter.

Q: 4. Hi, I would like to know about the quality of this filter. Is it pro level?

A: Yes it is. Goid success

Q: 5. What is outside diamater? I want to attach a screw in hood.

A: The outside diameter is 62mm.

Q: 6. Is this filter compatible with a Canon 50mm 1.4?

A: Yes, the Bower 58mm Variable Neutral Density Filter is compatible with the Canon 50mm f/1.4 EF USM lens.

Q: 7. DOES THIS FILTER FIT THE NIKKOR 200-500 LENS?

A: Yes, this filter fits a Nikon AF-S NIKKOR 200-500mm f/5.6E VR lens which has a 95mm front thread.

Q: 8. The rear thread is 82mm but what size is the front thread?

A: Same tread on each side of the filter.

Q: 9. is this filter compatible with Pentax 58mm lens?

A: I have used this filter with Canon lens. No problem. Also have mounted the filter in front of a HOYA uv filter. No problem. While I have not used it with any PENTAX lens, I would expect that there will be no problem since the mounting thread for 58mm is standard.

Q: 10. Are their both inside and outside threads on this filter so that it can be included anywhere in a stack?

A: I note it is threaded on both sides.