This 4.5" Round ND Filter from Tiffen has several uses and offers the possibility of achieving otherwise unachievable results. It enables the shooter to adjust exposure without affecting color balance. Neutral density filters appear gray and reduce the amount of light reaching either the sensor of a digital camera or the film plane of a traditional film camera. Neutral density filters are used to create some unusual special effects such as capturing the "blur" of the rippling water of a waterfall or the swirling effect of city traffic. Determining which neutral density filter yields ideal results for any given lighting situation takes knowledge, experience, and a collection of such filters.

Tiffen's ColorCore glass is produced through a process that entails permanently laminating the filter material in between two pieces of optical glass that are ground flat to tolerances of 1/10,000th of an inch, then mounting them in precision aluminum rings.

1.8 Optical Density    ColorCore Technology    Permits Using Fast ISO in Bright Light    Use to Create Blurs/Special Effects    Helps Control Depth of Field    Permits Use of Wider Apertures    Use with Film or Digital Cameras    Includes Plastic Case    Made in the USA

• To enable slow shutter speeds to be used, especially with high-speed films, to record movement in subjects such as waterfalls, clouds, or cars
• To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their backgrounds
• To decrease the effective ISO of high-speed film (above ISO 400) and allow it to be used outdoors in bright situations
• To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand, or other bright scenes that could cause overexposure

• Tiffen filters are manufactured using ColorCore technology, a closely guarded proprietary process that entails permanently laminating the filter material in between two pieces of optical glass that are ground flat to tolerances of 1/10,000th of an inch, then mounting them in precision metal rings
• The ColorCore process allows Tiffen to control the color and density of their filters and the characteristics of special effects filters with much greater accuracy than typical dyed-in-the-mass filters, which usually exhibit color and density variations

• Top Hollywood motion picture studios rely on Tiffen filters for their multimillion-dollar productions. Superior quality and design make Tiffen the overwhelming choice of moviemakers, professional photographers, and even NASA
• Tiffen has also been awarded an Emmy, from the Academy of Television Arts and Sciences, for its engineering excellence
• Tiffen, a leader in the filter industry, proudly makes its filters in the USA

Related Questions and Answers

Q: 1. I have this filter in the 55mm size but the lens caps that I have will not stay on for more than a few seconds, the slightest pressure on them pops the cap off the lens. Anybody find a lens cap brand/model that works with this filter?

A: The Sensei 55mm Center Pinch Snap-On Lens Cap is compatible with the Tiffen 55mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter.

Q: 2. Looking for a 77mm lens filters for my new nikon 70-200 f2.8. I'll be using in Iceland in winter when it might be gray overcast with lots of white snow? any suggestsion? on d750 camera

A: We recommend this circular polarizing filter, which will help you to eliminate any reflected light when shooting around water. It will also make blue skies pop and white clouds pop if you happen to encounter those conditions. We also recommend a protection filter such as a href= https://www.bhphotovideo.com/c/product/533244-REG/Tiffen_77HTDUC_77mm_Digital_HT_High.html target= _blank https://www.bhphotovideo.com/c/product/533244-REG/Tiffen_77HTDUC_77mm_Digital_HT_High.html/a

Q: 3. Will a standard 52mm Nikon lens cap fit on this polarizer? Thanks, Frank

A: Yes, a 52mm lens cap will fit on the Tiffen 52mm Digital HT filter.

Q: 4. Does this fit on a Canon RF 24-105mm L lens? Without touching the glass?

A: Yes it fits on any lens that has a 77mm filter thread such as the Canon RF 24-105mm f4 L lens.

Q: 5. Does this fit on a Sigma 17-50mm f/2.8 EX DC OS HSM Zoom?

A: Yes, the Sigma 17-50 you've described is a 77mm diameter lense. This filter will fit.

Q: 6. What is the Low Profile Titanium Lock Ring? Is this a way of locking the filter, to stop it rotating?

A: The lock ring holds the glass in the main filter ring. It is low profile to avoid vignetting. This has nothing to do with the rotation of the filter for polarization.

Q: 7. What is the thickness of the 77mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter by Tiffen? I plan to use it on a 17MM lens and want to make sure there is no vignetting.

A: The Tiffen 77mm Digital HT (High Transmission) Circular Polarizing is about 3mm thick.

Q: 8. Recommended circular polarizing filter for Canon 100-500 to ne used in snow conditions also use clear filter on lens allways?

A: Tiffen 77mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter have front threads of 77mm if you preffer to have an uv filter in the front. However this filter has the highest scratch-resistant coatings. If you would be shooting outdoors the filter factor cuts between 1.2-1.5 stop of light to help correct exposure when shooting with snow.

Q: 9. I'm looking for a 62mm polarizing filter for a 18-250 zoom I recently bought at B & H, on top of wanting a decent one I want one with a solid lens cap, I will be leaving this on the lens allot and a good filter is not much use if it is dirty or scratched. I previously bought B+W that had a useless plastic cap that would not stay on. Will the sigma lens cap attach to this or does it come with a decent one?

A: The Tiffen 62mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter is front threaded at 62mm's so you will be able to use the Sigma lens cap as designed.

Q: 10. How does this compare to the wide angle low profile filter that is about $40 cheaper? Which one is recommended for videography/filmmaking?

A: The wide angle version is meant for wide angle lenses to prevent vignetting. Otherwise, both versions have the same purpose in mind.