Neutral Density Filter
346027
The Tiffen Neutral Density Filter arrived on time, was in excellent conditon and works great.
2655443
It's amazing how much "junk" you see collecting on this filters.  You can readily see the filtering effect on the surface!
3625566
I have finally had a chance to test this Tiffen 77mm Variable Neutral Density Filter.

1) This filter is able to use 77mm lens caps on the inner ring to protect the glass from damage. You do not need to purchase another cap to cover the external diameter. However you cannot attach any other filter in front of it. But you still can behind the filter.
2) I have tested this filter in a constant lighting room and was able to get 5 to 7 stops of light fall off . This is fantastic as you do not need to carry multiple filters or a lens filter system. For the convenience of space and weight this is ideal for travel photographers. The box claims 2-8 stops (ND 0.6-2.4) of light drop off. My Cokin system has a set of 3 ND filters of 0.3-0.9. I tended to use the 0.6-(0.9+0.6) range so this Tiffen filter still has a better dynamic range.
3) Once you start towards darkening the filter towards the extreme there are some things to consider. a) The color shifts towards magenta at darkest extremes. I noticed this only at the 6-7 stop extreme of darkening. b) When you start to darken to 4 stops you start to get vignetting, and at 5 stops you start to see the bend of an X starting to cross the frame. I tested this vignetting on a APS-C camera sensor with a Tokina 11-16 lens at 13mm. The manual claims that this is a limiting factor while using 2 separate polarization filters on top.
4) When you keep the same density constant, but physically rotate the filter, color will change from yellow to blue. I am guessing these are the 2 polarization's that Tiffen used for the extreme colors to meet evening while in use. Thus I suggest that you properly tighten the filter to be the most even color before you take any pictures or video. Or if you change your camera from landscape to portrait, be aware this could shift the color. I mostly notice this color shift off reflective surfaces.

I personally can find the following uses for this filter:
1) You are now able to reduce your flash sync speed to a level you can now use your flash under the 1/200 or so speed outdoors
2) Able to use shallow depth of field apertures outdoors.
3) To use slower shutter speeds for silky motion of clouds and water.
4) For video work, you can now use the ideal frame rate speed.

I am overall giving this filter 4/5 with the intention of if you know exactly what type of density you need, then I would suggest getting a single filter, especially at such a darker density as the light will be more even for the exposure, and the color won't be distracting. Otherwise I find this filter a great bargain for having the ability to include such a large dynamic range of light for a single filter.
1784152
This filter does what it was intended to do and does it very well - it cleared up the fuzzy noise coming out of my wall phone.  The installation was a snap - I just followed the instructions and after two pushes, it was connected to the phone base on the wall.  The reception is now as clear as can be.
2204575
The Breakthrough 6 stop filter appears to be an excellent filter. I will be using this on an upcoming trip to Hawaii.
Packaging is superb and the cleaning cloth is an extra bonus.
2947581
The item arrived fast and in perfect condition.  It seems well-constructed and has a good gradation from dark to clear.  It definitely takes a little getting used to - not like non-grad's that stop light across the entire filter.  Two stops is about accurate for this filter.
1149456
This item consists of a neutral density filter and a clear filter. I sent it back un opened.  I thought it was a polaroid filter which, for the same price you get from Sony.  Firstly there are few times a ND filter would be necessary even on a beach as most camcorders have 1/2000 second shutter speeds and the other filter just protects the camera lens from dirt but puts more glass in the system.  Better off to buy a off brand Polaroid filter which gives really good control of glare.
2067104
Good solid glass filter. I was really surprised by how little color shift there is with this filter. I bought the whole set and every filter is the same way. Thats one less thing I have to fix in post. Easily the same image quality (if not better) as some of the bigger names without the high price tag.
2465554
A graduated neutral density filter can be extremely useful when taking photographs. It can go a LONG way to improving photographs of a bright sky with a medium foreground. Without this if you set your camera for a properly exposed sky the foreground will be too dark and if you expose for a properly exposed foreground the sky is all washed out with no detail. With a graduated neutral density filter like this one, though, you can rotate the dark part of your filter to cover the sky and leave the clear part on the foreground. When you set your exposure for the foreground the darker neutral density top part of the filter tones down the sky so it appears properly exposed, too. It's a fantastic addition to the filters you need for a lot of outdoor photography. The 0.6 rating of this filter means the darkest part of the filter reduces the amount of light transmission by two stops. It graduates from 0.6 to clear.

I'm not a photo lab or professional photographer so I didn't do a qualitative analysis of this particular filter against other graduated neutral density filters from manufacturers such as Heliopan, Cokin, Nikon, Leica, Hoya or others, so I can't say how it compares against other 0.6 graduated filters or against other graduated filters with higher or lower density. I can say, however, that I'm satisfied with the performance of this Tiffen filter. It's a glass filter which puts it a cut above plastic filters. It has a black aluminum frame which makes it sturdy and the black finish won't cast reflections or glare on the filter glass. It's not multi-coated. Multi-coated filters are recommended for digital photography because they eliminate problems with reflection and glare on the filter glass which can end up in the image and ruin the image. Apparently this is much more likely to occur with digital images than with film or slides. I haven't had any of those problems with this filter yet, though. It's easy to use and so far has produced clear nicely exposed images with my digicam for the recreational amateur photography I do. There are certainly higher priced graduated ND filters out there and if you're shooting professional photos with a high-end DSLR camera you'll probably want to choose a higher-end multi-coated filter. For recreational amateur photography, though, this filter adequately meets my needs.
10094
This is a replacement for the same make & model filter that got broken. I bought the last one in a camera shop and the price was considerably more. I appreciate the saving this time. It is a filter I use for most oydoor work.
910367
Good filter works as stated, I have used this filter n the past without any problems. I would recomend this item
648626
This is a great ND filter. With the ability to vary the strength of the filter, you don't need to carry around multiple filter for different situations. Nice construction. I can see no noticeable spherical aberration from the filter. Great product for the price rNGE.
818878
These filters are easy to install. They have proven themselves effective by my own comparative measurement before and after installation. As far as I am concerned, these are my preferred choice for electronic noise line filters. I call them the best.
2938087
This is one very simple filter to install on an in-line filter system. You plug a 1/4" tubing to both ends of the filter to connect it to your system; if you can't figure this out...DO NOT try to fix your own filter system. It even shows the direction of the water flow on it. There are two built-in quick disconnects on both ends of the filter for connection.
216619
Seems to work pretty well, it was a little larger than the filters I had used from the store, so I had to replace a piece of foam that functioned as cushion for the side of the filter with a thinner one. No issues otherwise
427688
Excellent filters for a fraction of the price of buying them locally at the hardware or big-box stores.  I use them on everything from our ATVs, Ferris zero-turn mower, power washer, etc.  Many uses and they do the job.
728909
This filter is no jewel in its class, but does its job quite well considering its low price. The image is not distorted. For pictures of sky and clouds the outcome is good, but for landscapes the quality is not good.
If you are a photographer who relies heavily on this type of filter, it is preferable to buy another brand of higher price, eg B + W or Hoya.