The 5 x 6" Tiffen 85/ND Filter 5x6" (3-Stop)blends both an amber color conversion 85 and a 0.9 neutral density filter. The ND filtration provides a 3-stop exposure reduction for darkening the entire image in order to photograph with a wider aperture or slower shutter speed than normally required. The 85 filtration covers the entire filter plane and converts the color temperature to 3400K for use with type A (tungsten) films.

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 5 x 6" / 127 x 152.4mm.

0.9 Optical Density    ColorCore Technology    Amber 85 and Neutral Density    Warming Filter to Decrease Color Temp    ND Filter to Increase Exposure Length

Combination of both an amber color conversion 85 and a neutral density filter.

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

85 filter converts the color temperature to 3400K, allowing you to use type A tungsten-balanced film in daylight situations.

Related Questions and Answers

Q: 1. What are the rings made of?

A: I would say light weight metal. Not 100% sure. Very nice filters. I have 6 of them.

Q: 2. Will this fit the Cokin P series holder?

A: Yes

Q: 3. Will it work on Zeiss 15mm f/2.8?

A: As long as your lens takes this size of filter. Not sure if your lens has a bulbous front or not. I have this filter on a 10-24 7mm thread no problem

Q: 4. will this fit a cokin filter holder?

A: Yes this can fit the Cokin EVO Z-Pro Holder.

Q: 5. Are the stops marked clearly?

A: Formatt Hitech 67mm Firecrest ND 1.8 Filter (6-Stop) is a solid ND so it only blocks 6 stops. A variable ND filter would have marked stops on the ring such as this Tiffen: https://bhpho.to/2SR9RfT

Q: 6. Does this filter block IR spectrum?

A: It "attenuates" or reduces IR interference during long exposures to prevent color casts. It does not fully block IR.

Q: 7. Does this filter fit the Benro master series?

A: I'm sorry, no. The Benro Holder takes 100mm wide filters. You would have to go with the Formatt 85mm filter holder or get the Formatt 13 stop filter, which comes in 100mm.

Q: 8. Does this come with pouch or case?

A: Its packaged in a case but the case itself i found too big to stuff in your bag.

Q: 9. Will this protect the sensor of a D7000 when taking sunrise, and sun pictures? Will use Live View and not optical for viewing.

A: You will want a 18 stop Solar filter https://bhpho.to/2MFxXFU.

Q: 10. Can this type of ND filter be used as stack up filter, 2-stop + 4-stop = 6-stop?

A: Yes you can , its always best not to stack filters