Offering increased control over exposures, this FotodioX Pro 145mm 4-Stop ND Filterfrom FotodioX Pro 145mm 4-Stop ND Filterfeatures a 145mm front filter thread, and is used to darken the entire image, thereby allowing you to increase exposure times or to work with a wider aperture setting than without the filter while maintaing the correct exposure. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. The ND 1.2 density of this filter requires a 4-stop increase in exposure to achieve a normal exposure.

The filter is made from optical glass, which has been multi-coated to maintain image quality when working in strong lighting conditions. The glass is set in a 3mm-thick anodized aluminum ring that is lightweight, durable, and slim to help prevent vignetting when used with wide-angle lenses.

1.2 Optical Density    Optical Glass Construction    3mm Anodized Aluminum Filter Ring    Darkens Entire Image    Allows Reduced Shutter Speed    Includes Carrying Pouch

Neutral density 1.2 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 4-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

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

Optical glass construction is multi-coated to reduce reflections and maintain image quality.

Slim anodized aluminum alloy ring measures just 3mm-thick to reduce the likelihood of vignetting when working with wide-angle lenses.

Padded carrying pouch included to protect the filter during travel or storage.

Related Questions and Answers

Q: 1. This filter will fit the lens to the Sigma 300-800?

A: The Sigma 300-800m zoom has a 165mm front diameter. The Fotodiox UV filter is only 145mm, so I doubt if this filter will fit the lens in question....

Q: 2. what is filter thickness?

A: I REALLY DO NOT HAVE A DEMININSION IT IS THE SLIM FILTER THAT IS ALL I CAN TELL YOU.

Q: 3. has anyone out there used this on the nikor 14-24mm and how did they find it worked?

A: The Nikon 14-24mm f/2.8 does not have filter threads, and this filter will not be compatible with that lens.

Q: 4. Disregard its size, did anyone find this multi-coated UV filter degrade the image quality, such as sharpness?

A: When using the FotodioX 186mm Slim Multi-Coated UV Filter users have experienced no degradation of image quality, because the filter is made with optical glass and multicoated. The thin rim prevents vignetting, and the UV coating will help prevent glare from the sun.

Q: 5. Solar Filter: Are any Cokin filters suitable to safely view & photograph the sun? I'm gearing up for this August's solar eclipse.

A: Unfortunately, Cokin does not have any filters that are designed for solar photography usage. However, if you own the Cokin Z-PRO filter holder, which uses 4 x 4 (100mm x 100mm) filters, then the LEE Filters 100x100mm Solar Eclipse Filter, B&H # LESE100, would work in your filter holder for your photographic usage needs.

Q: 6. does this work for the tokina 16-28mm pro system?

A: This filter will not work with a Tokina 16-28mm pro. We do have special filter holders for that lens. https://bhpho.to/2WkRXmt

Q: 7. Will this fit my tamron 15-30 when used with the wonderpana holder

A: Yes. This filter is 145mm and the Wonderpana WNDPN145-ESNTLCP-TMR1530 adapter is 145mm so it screws onto the Wonderpana; just be sure to get the Tamron specific adapter

Q: 8. Where would the CPL be located when stacked? Front or back of the circular ND filter? thanks.

A: Most likely I would stack on the outside not the back in order to adjust polarizer

Q: 9. How do you adjust the polarized lens to avoid the line through your picture? Without downloading pictures onto computer

A: Hi Jeff, you mean the black shade in a picture, if I take this between 12-16mm wide angle, right? It depends to the angle of the sunlight and in which angle I take that image. Usually it is not possible to adjust it in advance if you need to take that pic with 12mm wide angle.Bad luck...Best regards Vedat

Q: 10. Will the standard vignette on the Tokina 16-28mm at 16mm?

A: I am using mine with the Nikkor 14-24 as well and it works very well.