This 49mm Tiffen Water White Glass IRND Filter 49mm 7-Stopis a neutral density filter with a 128x filter factor that provides a 7-stop exposure reduction. Its 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 depth of field and convey movement more easily. Neutral density filters are intended to not affect the coloration of the image and are ideal for pairing with other filters.

The design of this filter has been optimized for use with digital sensors and to promote nearly flat attenuation of visible light and infrared light. Due to imaging sensors' greater susceptibility to infrared light, compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times.

This filter is noncoated, is constructed from Water White glass for increased clarity, and features an aluminum-alloy filter ring for durability while remaining lightweight. It 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.

2.1 Optical Density    Noncoated Water White Glass Construction    Aluminum-Alloy Filter Ring    49mm Front Filter Threads    Darkens Entire Image    Allows Reduced Shutter Speed    Allows Wider Aperture    Neutral Results, Visible, & IR Spectrums

2.1 neutral density 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 depth of field and convey movement more easily.

Attenuates infrared light to maintain color neutrality and suppress color casts due to increased exposure lengths.

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

Constructed from Water White glass for increased optical clarity.

Noncoated.

Aluminum-alloy filter ring for durability while remaining lightweight.

49mm front filter threads allow for use with other filters.

Knurled front edges provide a more textured grip when mounting or removing it from a lens.

Filter pouch for storage and transport.

Related Questions and Answers

Q: 1. Is this filter recommended for digital cameras as well, like the Lumix FZ200?

A: Yes, the Tiffen 52mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter is compatible with the Panasonic Lumix DMC-FZ200 Digital Camera and would fit onto the 52mm filter threads on the front of the lens, and would be recommended for usage to reduce or eliminate glare and reflections from non-metallic items and (depending on your position and the position of the sun) can also darken/deepen the blue in the sky on blue sunny days. By removing glare, it would also slightly increase teh color saturation and contrast of your image.

Q: 2. How is this different from the big stopper?

A: The big stopper is 10 stops and this filter is 15 stops.

Q: 3. 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: 4. 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: 5. What’s the diameter of this filter “wheel”?

A: Tiffen does not manufacture the filter wheel, we manufacture the filter which fits into it. You would have to contact the camera manufacturer for detailed information on the filter wheel.

Q: 6. 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.

Q: 7. 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: 8. Is this one of the Hoya HMC filters with box stating "Do not use any chemical cleaners for cleaning only a soft cotton cloth allowed"?

A: I looked at the box and I don't see that message written on it.

Q: 9. Does the Hoya MKII IRD have front threads in order to mount additional NDs ?

A: Yes, the Hoya HD MKII IR ND1000 Neutral Density Filter includes front filter threads so you can attach additional ND filters or a protective lens cap.

Q: 10. 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.