I was concerned when I bought this because a couple of people said it was a linear polarizer, not a circular one, because it failed the mirror test. I cannot speak to the item they received, but the one I received passed the test (it was clear in one direction and it turned black when I reversed the filter).
I like the fact that the part you rotate is wide because it is easy to feel it. The motion is quite smooth and has a reasonable amount of friction. There are also several locations around the rim where you can easily grab the filter to remove it from the lens.
Overall, I would say this is a well-designed and thoroughly though out product.
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Product Description
World’s most color neutral CPL.
The X4 CPL features ultra-clear SCHOTT B270 optical crown glass made with the highest purity raw materials and our cutting edge MRC16 and Nano Coatings technology.
At the core of the X4 is our all-new, internally designed CPL film made in the USA. While most manufacturers use off-the-shelf polarizing films intended for LCD panels, we developed a unique approach specifically for precision optics.
The result is an incredibly sharp, color neutral CPL with the highest light transmission of any available polarizer.
The all-new X4 CPL has 4 Polarizer Guide Symbols (aka “CPL Guides”) on the outside of the filter frame:
HOW IT WORKS:
STEP 1: Look through the viewfinder and polarize the scene to the desired amount.
STEP 2: Note the position of the filter by observing which symbol is on the frame.
STEP 3: Rotate filter back to the same symbol as you switch from horizontal to vertical compositions
A winning design proven by outdoor photographers.
We engineer every one of our filters to withstand a lifetime of use in extreme wind, salt water, dust and any other abrasive elements found in nature.
The X4 CPL filter is precision machined from high-quality brass with our signature traction frame.
Our rugged design was developed for durability and to make it easy to securely attach and remove the filter - even with gloves in cold conditions.
Our team spent years developing each aspect of the filter to maintain optical performance and reliable function for a lifetime of use.
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25 YEAR SUPPORTWe stand behind each filter with our 25 Year Support and US-based phone, email and live chat. |
NANO-COATINGEach filter incorporates our state-of-the-art Nano Coating technology which repels dirt, water and other debris by beading up on the surface rather than absorbing and smearing. |
WEATHER-SEALEDOur X4 CPL filters are designed to hold up for years of regular use in the field. Each filter is weather-sealed and can withstand extreme wind, salt water, dust and other abrasive elements and conditions. |
Compare with similar items
This Item  X4 CPL 77mm Circular Polarizer Filter - Schott B270 - MRC16 - Nano Coating - Weather Sealed - 25 Year Support by Breakthrough Photography |  |  |  |  |  | |
| Price | $149.00 | $119.00 | $88.39 | $206.66 | $104.42 | $56.99 |
| Delivery | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it May 7 - 10 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 | Get it as soon as Friday, May 3 |
| Customer Ratings | ||||||
| Picture quality | ||||||
| Quality of material | ||||||
| For landscape photography | ||||||
| Sold By | Breakthrough Photography, LLC | Urth US | Amazon Global Store UK | Amazon.com | Amazon.com | K&F Concept |
| thread size | 77 millimeters | 77 millimeters | 77 millimeters | 77 millimeters | 77 millimeters | 77 millimeters |
| photo filter effect | Ultraviolet, Polarizer | Polarizer | Polarizer | Polarizer | Polarizer | Polarizer |
| material | X4 CPL | Glass | Optical Glass | Optical Glass, Brass | Brass, Optical Glass | — |
| water resistance | not water resistant | water resistant | not water resistant | water resistant | water resistant | waterproof |
Reviews with images
Really good with cars on a sunny day
This filter filters out about one stop of light by defaultI first tested ,this lens using LED lighting with product photography. specifically, I shot the watch case back with some extreme light reflection to see how much of the reflection the filter could removeIn this test my first impression was kind of disappointingHow ever, my second test was shooting my kids car on a bright sunny day , and the filter was much more impressiveI got this filter for my watch YouTube channel , and for that the benefit is very marginal, however for Car photography I can see how this lens would be next level specially at outdoor car shows / events where lighting and reflection will be super harshI can see performing super well in street photography as wellI’ve deviced to keep this filter and continue to work with itThe product is much better than I first expected even if not as useful for the particular job I wanted it forBut good enough in sun light situations where it purpose really seems to shineIt's going in my camera bag for now
Top reviews from the United States
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Reviewed in the United States on January 1, 2018
After recently deciding to buy a CPL for my camera, I whittled the available options down to two -- Gobe 3 Peak (Schott), and Breakthrough Photography X4.
On paper, the Gobe has the same specifications as the X4: Schott B270 Glass and 16 layers of coating.
The X4 boasts that it's coatings are unlike any other, and that it is able to capture the highest level of sharpness while maintaining perfectly neutral colors. Many comparisons have shown that the X4 is top dog against all the major players. However, I could not find a direct comparison against Gobe and hence decided to give both of them a shot myself.
Sharpness: I could not find any significant difference in sharpness between the Gobe and the X4. They are both spot on and do not appear to affect sharpness in the least.
Colors: The Gobe definitely shoots "warmer" than the X4. The X4 comes out neutral as advertised. If you seeking out-of-camera accuracy, the X4 wins hands down. However, the Gobe is only SLIGHTLY off, and it can be corrected in a single Spot White Balance click in your post processor of choice. Since most serious photographs will do some amount of post processing anyway, this is not a huge deal. I don't think the average amateur would even notice the difference without a side by side comparison, anyway.
Polarization: Both filters were very effective in removing glare in my tests. I could not find a significant difference between the two.
Production quality: Both filters are quality products, but the X4 wins here again. The grip portion of the X4 sticks out much further and it easier to screw on and off as a result. The Gobe is much more likely to get stuck on a lens with its design.
Extras: The packaging of the X4 was surprisingly hard to open and seems that they tried too hard to make it seem "nice". The amount of jostling that it took to separate the box parts was excessive considering that there is a $160 piece of glass inside it. Gobe on the other hand uses modest packaging and also plants trees with the money they make from their products.
Final opinion: The X4 is the better product but, for me, it is not worth the extra $100 that I could instead spend on adding ND filters to my collection. If money is no object or you demand the best, get the X4. If you don't mind a touch of white balance correction and a slightly lesser product in general, get the Gobe.
I have included some pictures of my tests. In all pictures, the order is: No filter, Gobe, X4. The car is demonstrating the polarization, and the text is a 100% crop to compare the sharpness.
Size: 82mm CircularStyle: X4 CPLVerified Purchase
Gobe 3 Peak (Schott) vs Breakthrough Photography X4
Reviewed in the United States on January 1, 2018
TL;DR: X4 if you have the money or NEED the best. Gobe if you're willing to correct white balance in post.Reviewed in the United States on January 1, 2018
After recently deciding to buy a CPL for my camera, I whittled the available options down to two -- Gobe 3 Peak (Schott), and Breakthrough Photography X4.
On paper, the Gobe has the same specifications as the X4: Schott B270 Glass and 16 layers of coating.
The X4 boasts that it's coatings are unlike any other, and that it is able to capture the highest level of sharpness while maintaining perfectly neutral colors. Many comparisons have shown that the X4 is top dog against all the major players. However, I could not find a direct comparison against Gobe and hence decided to give both of them a shot myself.
Sharpness: I could not find any significant difference in sharpness between the Gobe and the X4. They are both spot on and do not appear to affect sharpness in the least.
Colors: The Gobe definitely shoots "warmer" than the X4. The X4 comes out neutral as advertised. If you seeking out-of-camera accuracy, the X4 wins hands down. However, the Gobe is only SLIGHTLY off, and it can be corrected in a single Spot White Balance click in your post processor of choice. Since most serious photographs will do some amount of post processing anyway, this is not a huge deal. I don't think the average amateur would even notice the difference without a side by side comparison, anyway.
Polarization: Both filters were very effective in removing glare in my tests. I could not find a significant difference between the two.
Production quality: Both filters are quality products, but the X4 wins here again. The grip portion of the X4 sticks out much further and it easier to screw on and off as a result. The Gobe is much more likely to get stuck on a lens with its design.
Extras: The packaging of the X4 was surprisingly hard to open and seems that they tried too hard to make it seem "nice". The amount of jostling that it took to separate the box parts was excessive considering that there is a $160 piece of glass inside it. Gobe on the other hand uses modest packaging and also plants trees with the money they make from their products.
Final opinion: The X4 is the better product but, for me, it is not worth the extra $100 that I could instead spend on adding ND filters to my collection. If money is no object or you demand the best, get the X4. If you don't mind a touch of white balance correction and a slightly lesser product in general, get the Gobe.
I have included some pictures of my tests. In all pictures, the order is: No filter, Gobe, X4. The car is demonstrating the polarization, and the text is a 100% crop to compare the sharpness.
Images in this review
Reviewed in the United States on March 26, 2024
Size: 77mm CircularStyle: X4 CPLVerified Purchase
I love products in beautiful packaging and this is one of them. The box is thick and embossed and has a beautiful gold seal. There is a card inside saying the filter is American-made and that too is embossed. Just a feel-good unboxing experience.
Images in this review
Top reviews from other countries
Mike Milton
Great filter, well made
Reviewed in Canada on February 1, 2024Size: 95mm CircularStyle: X4 CPLVerified Purchase
Jianan Zhang
Very good quality
Reviewed in Canada on January 6, 2024Size: 77mm CircularStyle: X4 CPLVerified Purchase
maurice byatt
Exceeded expectations in colour neutrality
Reviewed in Canada on May 2, 2022Size: 58mm CircularStyle: X4 CPLVerified Purchase
A. J. Lock
The best filters I have used
Reviewed in the United Kingdom on May 10, 2021Size: 77mm CircularStyle: X4 CPLVerified Purchase
Brian C
Excellent Quality in a superb build
Reviewed in the United Kingdom on April 26, 2021Size: 77mm CircularStyle: X4 CPLVerified Purchase
