Latest or all posts or last 15, 30, 90 or 180 days.
Welcome to diglloyd.com
In-depth review coverage is by subscription.
Also by Lloyd: MacPerformanceGuide.com and WindInMyFace.com
First-time visitor
Rigorously lab tested and OWC certified.

Aurora Aperture Neutral Density Filters: 6, 12, 16 Stops with Excellent Neutrality

Get Aurora Aperture filters at B&H Photo.

See also the Filters articles with spectral transmission and Aurora Aperture Introduces PowerUV Protection and CPL Filters with Corning 'Gorrilla Glass'.

Aurora Aperture is offering exceptionally neutral neutral-density filters; see the spectral transmission graphs below. See press release further below after the graphs.

The Aurora PowerND family consists of three light reduction ratings:

  • ND64 – 6 stops
  • ND4000 – 12 stops
  • ND65000 – 16 stops
Aurora Aperture PowerND filters

The 6 stop filter is typically used in low light conditions such as sunrise and sunset. Using a 6 stop filter can reduce shutter speed to a few seconds in those conditions.

The 12 stop filter can be used to slow down shutter speed further to minutes in dusk and dawn conditions, or a few seconds during daylight.

The 16 stop filter can do magic during bright daylight, making it possible to expose up to several minutes or more. It can convert a bright day into night, allowing photographers to use two minute exposure time with ISO 100 and f/8 aperture during a bright day.

The ND4000 and ND65000 have distinct advantages in having more stops than the typical ND1000 or ND32000. They allow users to avoid diffraction softening by enabling users to avoid very small aperture settings or alternatively allowing for longer exposures. In the case of the PowerND 4000 that means two more stops than the typical ND1000 and for the Power ND65000 there’s one additional stop.

Spectral Transmission of Aurora Aperture PowerND 64 six-stop neutral density filter
Spectral Transmission of Aurora Aperture PowerND 4000 4 twelve-stop neutral density filter

Press Release: Aurora Aperture Introduces PowerND Family and an Industry First Rear Mount Glass Filter for Canon EF 11-24mm F4L USM

April 21, 2017

Irvine, California, April 21, 2017 – Aurora Aperture Inc., a Southern California startup, today has introduced the PowerND family of high quality fixed neutral density (ND) filters.

The PowerND family consists of three ratings of light reduction capability: ND64 (6 stops),ND4000 (12 stops), and ND65000 (16 stops). Four different formats are available: circular filters from 37mm to 95mm, 100 x 100mm square filters compatible with popular square filter adapters, 150mm circular filters with an adapter for the Nikon AF-S 14-24mm f/2.8G ED lens, and the Aurora CR format, an industry first, a rear mount glass filter for the Canon EF 11-24mm F4L USM lens.

The 6 stop filter is typically used in low light conditions such as during sunrise or sunset for sub-second shutter speed. The 12 stop filter can slow down shutter speed to minutes in dusk and dawn conditions. The 16 stop filter can do magic on a bright day, allowing photographers to expose up to several minutes or more.

The ND4000 and ND65000 have distinct advantages in having more stops than the typical ND1000 or ND32000. They allow users to avoid diffraction softening by enabling users to avoid very small aperture settings or alternatively allowing for longer exposures. In the case of the PowerND 4000 that means two more stops than the typical ND1000 and for the Power ND65000 there’s one additional stop.

“We introduced a variable ND family last year and it was embraced by photographers and videographers worldwide,” said Jinfu Chen, founder and CEO of Aurora Aperture Inc. “the fixed ND family we introduce today is much more powerful in terms of light reduction capability and offers even better optical performance, along with more formats for different camera lenses.”

A small rear mount filter using Gorilla® Glass for the Canon EF 11-24mm F4L USM is an industry first. Prior to this users would have to use extremely large filters with diameters up to 186mm with a bulky front lens shade adapter. The Aurora CR format filter mounts in the rear of the lens, making it much easier to carry and lower in cost. Other Canon lenses that Aurora CR format filter can be used in* are the EF 8-15mm f/4L Fisheye, EF 11-24mm F4L USM, EF 14mm f/2.8L US, EF 15mm f/2.8 Fisheye, EF 16-35mm f/2.8L USM, and EF 17-40mm f/4L USM.

Designed in California by Aurora Aperture, the Aurora PowerND filters employ up to 128 layers of double sided nano coating** in order to achieve color accuracy and powerful light reduction capability. Hydrophobic and oleophobic coating is applied to filter surface with PFPE coating. The end result is that water droplet on the filter surface can maintain a static contact angle of 110 degrees, one of the best in the industry.

Availability and Pricing

The Aurora PowerND family will be available through Kickstarter starting in April 2017 and to dealers and direct orders in August 2017. List price starts at US$42 and varies depending on filter format and size.

https://www.aurora-aperture.com

info@aurora-aperture.com

* As of April 21, 2017
** ND4000 and ND65000s


diglloyd Inc. | FTC Disclosure | PRIVACY POLICY | Trademarks | Terms of Use
Contact | About Lloyd Chambers | Consulting | Photo Tours
RSS Feeds | Twitter
Copyright © 2008-2017 diglloyd Inc, all rights reserved.