The 40.5mm #25 Red Filter from Tiffen is a filter designed to build contrast in black and white photography and creates separation between the tones. Using this filter it creates dramatic skies or simulate a moonlit scene during the day by slightly underexposing the image and also eliminating fog and haze. Infrared film is enhanced with extreme contrast turning skies even more dramatic and turning foliage white in landscape photos. The filter has a filter factor of 8, so you must increase your exposure by 3 stops to compensate.

Tiffen filters are not dyed, but are manufactured by using ColorCore technology. This process laminates the filter material between two pieces of optical glass and grinds down and polishes the glass. The glass is then mounted to the metal ring, which after that can be screwed onto the lens for the desired effect.

Builds Contrast and Separation of Tones    Creates Dark and Dramatic Skies    Extreme Contrast with Infrared Film    Cuts Through Haze and Fog    ColorCore Technology

Builds contrast and separation of tones

Extreme contrast with infrared film

Creates dark and dramatic skies

Cuts through haze and fog

ColorCore technology

Related Questions and Answers

Q: 1. Can this filter be used with the Nisi v7 filter holder?

A: Yes, the NiSi V7 Alpha 100mm Aluminum Filter Holder can be used with the Haida Red Diamond ND6.0 Filter (100 x 100mm, 20-Stop).

Q: 2. Does it fit the Hero+ ?

A: John is correct. It's not the camera but the housing you need to be concerned about. This fits the standard housing but not the dive housing. I had to buy a different filter to fit the dive housing.(Polar Pro Red Dive Filter for GoPro Dive Housing)

Q: 3. What does the '630" designation mean for B+W filters?

A: B+W does not describe what 630 means. It is only a model designation.

Q: 4. Will the Haida Red Diamond 100mm filters fit their M10-II filter holder?

A: Yes it is compatible with the M10-II filter holder.

Q: 5. Will this fit Hero 4?

A: Yes, it is the same housing as the 3+

Q: 6. Can these be cut to fit the rear gel filter holder of a 14mm lens?

A: Yes the Wratten filters can be cut and used in most rear filter mounted lenses.

Q: 7. Are these stackable?

A: Yes, you can stack the E-Colour #209 .3 Neutral Density Filter.

Q: 8. will this fits on gopro hero? (the simple one with enclosed battery), thanks

A: It fits my hero 3+ dive housing. Not sure about older versions.

Q: 9. difference between red diamond and regular nano 10 stop?

A: Haida Red Diamond filters are constructed from shock-resistant optical glass. To prevent internal ghosting and reflections, while further enhancing clarity and color fidelity, each glass surface includes 10 layers of anti-reflective nano coatings. An additional 10 scratch-resistant hydrophobic coatings further protect a Haida Red Diamond filter's substrate and result in an improved beading effect when its surfaces come in contact with water or oil, allowing for more efficient cleaning. Additionally, Haida Red Diamond filters feature rounded edges for easier placement within a compatible filter holder slot.

Q: 10. what's the dimension of this item?

A: The approximate dimensions for the Hammond SK 25-Note Pedalboard are as follows:42.75 wide; 36.75 long; 12.50 high including the swell pedal.