Mofage POCO adapter Pro Duo Stackable Filter Review

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Mofage has added more filter options to its POCO drop-in filters adapter. Some of the new filters that are available include Pro Duo (FSND), CPL, Glimmer filters, and a new Kine mount.

I reviewed the Mofage POCO drop-in filters adapter on the site back in 2022. In case you are not familiar with the product, The MOFAGE POCO PL to E/RF/L/Z Mount Adapter combines rear filters with adapters. The POCO is compatible with most PL mount lenses, although there are certain lenses (such as rear anamorphic) that will not work due to clearance issues.

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I really liked the Mofage POCO drop-in filters adapter and I actually chose it as my favorite camera accessory of 2023.

So what is new?

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Pro Duo Stackable Filter: Ranging from ND 0.3 to ND 2.4. This is an interesting solution because it allows you to stack various ND filters together to create more ND, or mix another filter with an ND filter. One side features a fixed filter, while the other side lets you put in interchangeable filters.

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CPL Filter: This filter, as the name suggests, allows you to eliminate unwanted reflections.

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Interchangeable Mount for Kinefinity: This is interesting as Mofage has made an interchangeable mount that was designed specifically for Kinefinity cameras.

Creative Filters: There are also filters such as Ray Streaks and Glimmer filters, etc.

Pro Duo Stackable Filters

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I was interested to test out the Pro Duo Stackable Filters because there are times when using a fixed ND makes more sense than using a variable ND filter. Fixed strength ND filters tend to have better color accuracy and performance and I like how Mofage has given users of their adapter the ability to used fixed strength ND as well as variable ND.

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It is also very handy to be able to stack ND filters to create the right amount of ND you want.

The FSND filters come in the following strengths:

  • 0.3
  • 0.6
  • 0.9
  • 1.2

You also get an additional 1.2 filter that isn’t in a tray. You can use this to stack with the other filters to create additional strengths.

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With the 1.2 filter used in combination with the other filters you can create the following:

  • 1.5
  • 1.8
  • 2.1
  • 2.4

This gives you a good range of fixed-strength ND and you can use anything from 0.3 all the way up to 2.4.


Stacking the filters is a fairly easy task. You simply pull back the small purple lever and place the 1.2 filter on top of the other filter and then release the lever.


Putting the filters in and taking them out of the POCO adapter is very straightforward.

According to Mofage, the FSND (Full Spectrum Neutral Density Filter) enables you to have control over light variations, reducing brightness without causing color shifts and eliminating distortion.

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The filters are claimed to effectively remove far-infrared (IR) contamination to restore genuine skin tones, ensuring accurate and natural representation.

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The filters feature scratch resistance, waterproofing, and oil resistance to significantly enhance their lifespan.

Is there a color cast?

It is important to check and know if the filters you are using are causing a color cast. While it is always best practice to re-white balance your camera when changing ND, that is not always going to be possible in certain shooting situations.

Sometimes (this does depend on the quality of the filter) you can start to see color shifts once you start introducing ND strengths above 1.8.

I did a controlled test where I white balanced the camera with the clear filter and then started to introduce the different strengths of ND. The ISO, aperture, WB and lighting were kept the same for all of the tests. To keep the exposure the same for all of the ND strengths I simply adjusted the shutter speed to compensate.

As you can see from the tests, there are certainly discrepancies with the filters. As soon as you reach about 2.1 you can see a slight magenta shift happening. I didn’t notice any reduction in sharpness when using the filters.

I didn’t find the filters to be overly consistent, but in saying that, the color casts were fairly mild even up to the maximum strength of 2.4. There is nothing that overly concerned me and you would only have to make small minor corrections in post to get them all to match.

Above you can see the individual shots for all of the tests.

Above you can see the 300% crops of the individual shots for all of the tests.

Above you can see the vectorscope images for all of the tests.

Above you can see the 300% vectorscope images for all of the tests.

What I did find interesting was the noticeable difference between 0.3 and 0.6. This is something that I wasn’t expecting to see. 0.6 was quite a bit warmer than 0.3.

Above you can see the difference between the Clear filter and the maximum strength of 2.4.

UPDATE: After sharing my test results with Mofage they have identified a some defective items. A new batch of filters will be available in March and I will retest them again.


You could argue that maybe this is a caveat or maybe it isn’t. As there are a lot of filters you need to carry all of them around, but that is true of using any fixed strength ND filters regardless of size. Yes, the FSND filters are very small, but they can be a bit fiddly to use, especially if you are stacking filters.

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Using rear-mounted filters and putting them in and taking them out also opens up the possibility of you getting dust or particles on your sensor. I would recommend (and I know this is not possible to do in a lot of scenarios) that you use a small blower to give the filters a quick clean before you put them into the adapter.

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The other issue that you may experience when using rear filters and a hybrid mirrorless in a camera cage, is that you may not be able to put filters in or take them out because of clearance issues. I had this exact issue when using the adapter on a Nikon Z9 with a Tilta cage. I wasn’t able to take a filter out or put one in with the adapter mounted to the camera.

The VND filter module wouldn’t work at all, because it was impossible to put the adapter on the camera with the cage as the 0.8 pitch gears on the VND filter end up hitting the cage.

With rear-mounted filter adapters you need to be careful, because they may not work with some mirrorless hybrids and certain cage solutions.

Price & Availability

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Mirage is currently offering a 25% discount on the filters.

The Pro Duo – Standard Kit is priced at $159 USD and includes Fixed Filters: FSND 0.3, FSND 0.6, FSND 0.9, FSND 1.2, Flexible Filters: Pure Clear x4.(Retail Price: $199 USD)

The Pro Duo – Advanced Kit is priced at $239 USD and includes Fixed Filters: FSND 0.3, FSND 0.6, FSND 0.9, FSND 1.2, Flexible Filters: Pure Clear x4; FSND 1.2, 1/4 Glimmer, 1/8 Glimmer. (Retail Price: $299 USD)

Users can also purchase individual items such as FSND 1.2, 1/4 Glimmer, 1/8 Glimmer, and CPL Filter, each priced at $45 USD. 

Mofage also has a Filter Case that is made of high-quality PP material. It was designed to be sturdy and durable and to provide comprehensive security protection for your filters to prevent scratches and damage.

The Filter Case has dimensions of 9.29 x 7.08 x 3.74 inches and can accommodate up to 12 fixed filters and 8 flexible filters.

The Filter Case will be available at a special launch price of $55 USD (the usual price will be $65 USD).


The Mofage POCO adapter Pro Duo Stackable Filters are very affordable and if you already own a POCO adapter or are looking at buying one, they are certainly worth getting.

They are relatively easy to use, but like most affordable filters, they do have a slight color cast (particularly once you start stacking the filters) that you do need to be aware of.

I like what Mofage has done here, as the ability to stack filters and use FSND along with other creative filters gives the end user a lot of versatility.

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