This 67mm lg counter depth refrigerator water filteris an ND filter with a 4x filter factor that provides a 2-stop exposure reduction. Its 0.6 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or slower shutter speed than normally required. By increasing your aperture or slowing your exposure time, you are able to control depth of field and convey movement more easily. Neutral density filters are intended to not affect the coloration of the image and are ideal for pairing with other filters.

The design of this filter has been optimized for use with digital sensors and to promote nearly flat attenuation of visible light 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 is constructed from Water White glass for increased clarity as well as color fidelity. It is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass, grinding flat to a tolerance of 1/10,000th of an inch, and then mounting to precision metal rings.

0.6 Optical Density    Water White Glass Construction    ColorCore Technology    67mm Front Filter Threads    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture    Neutral Results, Visible & IR Spectrums    Includes Plastic Case

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

Providing a 2-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Attenuates infrared light to maintain color neutrality and suppress color casts due to increased exposure lengths.

Filter does not affect coloration of the image and is ideal for use with other filters.

Constructed from Water White glass for increased optical clarity.

67mm front filter threads allow for use with other filters.

Plastic filter case for storage and transport.

Related Questions and Answers

Q: 1. Any vignetting when mounted on a Zeiss 15mm lenses on Nikon D810?

A: This filter may cause vignette when mounted on a full frame camera and 15mm lens.

Q: 2. What is the light transmission of this?

A: Sigma does not have any published specifications for light transmission of this CPL (which I believe is typical because most CPLs have filter factors in a range) but does advertise a 30% increased transmission over their competitors' CPLs. This filter does have a 0.3-0.5 stop reduction of light, which equates to a theoretical numerical transmission of 81.2% (at 0.3 stops) to 70.7% (at 0.5 stops), the formula being 100% multiplied by half to the power of 0.3 and 0.5.

Q: 3. i just opened the box and it needs to be assembled and I didn't receive instructions....can someone tell me how?

A: There are no instructions on the counterweight. But this is a drawing for a different version but is similar and it shows it broken down, http://bit.ly/1FnABb5.

Q: 4. can someone please tell me how to assemble the impact 10 pound counterweight?

A: no assembly required and the weight works rather well as counter balance

Q: 5. Will this work with the LEE Filters 105mm Accessory Front Thread Adapter Ring &H # LEFARPFK105?

A: yes, it will fit perfectly on the LEE Filters 105mm Accessory Front Thread Adapter Ring.

Q: 6. Is this a perpetual license or 1-year (or other timeframe)?

A: The Axis Communications People Counter Software E-License BH #AX01147011 is an annual license.

Q: 7. what is wr stand for?

A: Water resistant

Q: 8. How many people counters does this annual license cover?

A: The Axis Axis Communications People Counter Software E-License is added per camera that needs to support people counting. The amount would be based on the camera model you are purchasing the license for. More info: https://bit.ly/48jZuD8 Compatible Products: https://bit.ly/42EqyMe

Q: 9. i have bought a sigma 77 mm polarized circular filter . I returned the first one after 3 days as I found small scratches on the glass and have now found considerable more scratches on the second after only three months prompting me to think that the quality of the glass or polarizing finish is not up to par . I am finicky about how and what I clean my filter with , and how I store my camera , so I know that what ever has caused the scratches can not be that significant , but maybe the glass is not as hard / strong as it should be. Can,t seem to find any specs on the grade or hardness of the glass used for these filters. Any body have any ideas ?

A: It is best if the filter comes with scratches to contact B&H customer service.Customer Service, can emailed at ord-status@a href= http://bhphotovideo.com, target= _blank bhphotovideo.com,/a or call them after 9am EST at: 800.221.5743 or 212.239.7765. Or you can talk to them in Chat.

Q: 10. Is this binder safe for storage of photos in archival pages/sleeves?

A: It certainly would be fine to be used with photos in archival pages.