This 6.6 x 6.6" Tiffen ND Filter 6.6x6.6 7-Stopis a solid neutral density filter providing a 7-stop exposure reduction. This 2.1 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 the depth of field and convey movement more easily. Neutral density filters do not affect the coloration of the image and are ideal for pairing with other filters.

This filter is made using ColorCore technology, a process that involves laminating the filter substrate between two pieces of optical glass and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 6.6 x 6.6" / 167.6 x 167.6mm.

2.1 Optical Density    Glass Filter    ColorCore Technology    Requires 7-Stop Exposure Increase    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture

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

Providing a 7-stop exposure reduction, this filter allows you to control the depth of field and convey movement more easily.

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

Related Questions and Answers

Q: 1. What's the dilution ratio?

A: 1+19 Dilution

Q: 2. How to dispose contents of half used ILFOSTOP bottle which has stayed in shelf for several years. To sewer?

A: Most of the major photographic chemical manufacturers concur here quoting Kodaks J300 Information Document: Most photographic chemicals can be sentto the sewer or publicly owned treatment works (POTW). They include: Developers, Stop baths, Fixers (after silver recovery) and Wash waters. They advise not disposing of Toners, Solvents and other materials that are prohibited, i.e., flammable materials.Ilford states: Amateur and home users should dispose of small amounts of used photographic processing solutions by dilution with plenty of water and washing them down the drain.Sprint adds: Septic systems are designed for biological treatment of standard household waste, and do not properly treat chemical wastes associated with photographic processing.For more details please see:a href= http://bit.ly/1wywtjg target= _blank http://bit.ly/1wywtjg/aa href= http://bit.ly/1vQUYXv target= _blank http://bit.ly/1vQUYXv/aa href= http://bit.ly/1vlSADh target= _blank http://bit.ly/1vlSADh/aa href= http://bit.ly/1vrL4f3 target= _blank http://bit.ly/1vrL4f3/a

Q: 3. Will it fit a nikon d7500 plus a tamron 100-400?

A: The f-stop Navin Welded Camera Pouch is a touch too small for the D7500 with the Tamron 100-400mm f/4.5-6.3 Di VC USD Lens.

Q: 4. Can this be used to stop a D-76 developer?

A: Hi yes, , this stop bath works with kodak d-76

Q: 5. If I use it on b&w films development,does it also request 20 degree temperature?

A: It is not as critical as developer temperature. Here is what the instructions say:ILFORD ILFOSTOP 10 seconds About 20C/68Fstop bath diluted 1+19 preferably nowarmer than25C/79F and nocooler than15C/59F

Q: 6. will Nikon Z8 with 70-200 Z series lens with TC-2X teleconverter attached fits in this pouch?

A: The Nikon Z8 Mirrorless Camera with the Nikon NIKKOR Z 70-200mm f/2.8 VR S Lens and the Nikon Z Teleconverter TC-2x attached fits in the f-stop Navin Welded Camera Pouch.

Q: 7. Will this fit a Nikon Z7 II with the Nikon NIKKOR Z 100-400mm f/4.5-5.6 VR S Lens attached and the lens hood reversed?

A: Yes, the F-stop Navin Welded Camera Pouch will fit the Nikon Z7 II Mirrorless Camera with the Nikon NIKKOR Z 100-400mm f/4.5-5.6 VR S Lens attached. The lens hood must be set to reverse, and the lens foot needs to be angle towards the camera hand grip. The camera and lens have a total lenght is 11''; the pouch interior lenght is 12.5''.

Q: 8. Can I use this stop bath on paper as well as film?

A: Yes

Q: 9. Will this bag hold a Sony A7R4 camera with a Sigma 100-400 mm zoom lens attached? Would the lens hood need to be detached?

A: Yes, the f-stop Navin Welded Camera Pouch holds the Sony A7R IV with the Sigma 100 - 400 mm lens + hood attached.

Q: 10. It seems like this may have been answered, but would it fit a mirrorless (Z7) with the 70-200 with lens hood?

A: It will fit but you will have to turn the foot to the side and the lens hood must be reversed. It's tight even after doing those steps. We recommend the Lowepro ProTactic TLZ 75 AW Convertible Camera Bag https://bhpho.to/3H3iEjN . You'll just have to reverse the lens hood to put it in the bag.