FotoDiox Now Offers 6 Variable ND Throttle Lens Adapters

If you've been following my Instagram feed, I shared an image of a new FotoDiox Canon FD Lens Adapter for Micro Four Thirds. This new lens adapter has a Variable ND Filter built 'inside' of the adapter placing the ND filter behind the lens instead of in front. There are some major benefits to this, which you can hear about in the video below.

The ND Throttle is available in 6 different versions (at the moment) allowing you to adapt several different lens types to either Sony E Mount or Micro Four Thirds. I have already played around with my Canon FD to MFT adapter on the GH4 and BlackMagic Pocket Cinema Camera. I will be doing more tests this week, but to get more information about the new FotoDiox ND Throttle adapters check out the product page (click here).

FotoDiox ND Throttle Adapter
find-price-button FotoDiox ND Throttle Variable ND Lens Adapters

21 thoughts on “FotoDiox Now Offers 6 Variable ND Throttle Lens Adapters

  1. A. M. Hughes

    I have been experimenting with the ND adapter on my SONY A7ii and CANON FD 50mm f/1.2 lens. Only issue so far has been prominent vegetating when this lens is wide open; disappears when stopped down a bit. I expect this will be a non-issue when I try it on slower FD lenses(28mm f/2.8 and 17mm f/4) in a couple of weeks.

  2. So much negative talk, about a product most have never tried there self! This is the thing I don't get about so called videographers, you spend to must time complaining about gear instead of using gear. Shut up! buy it! Try it and if you don't like it send it back!! You are not Phillip Bloom or and other short film guru you look up to. You are you, shoot your own way and test your own gear!! come up with your own conclusion.

  3. Emm

    Post author

    @Saskatoon Wedding Films - If you were to move a canon lens away from a canon body it could no longer focus properly. It is impossible to add such an adapter between that type of setup because of the gap it will create. This adapter works only with lenses designed for larger sensors that are then adapted to small sensor cameras. Naturally the lens being adapted has to sit further from the sensor in order to focus the image properly so there is enough gap to add something in between.

  4. One thing worth noting when it comes to variable ND filters is that they're effectively two circular polarizers on top of one another. In most situations this doesn't matter, but there are times when shooting highly reflective surfaces like glass, cars and especially LCD screens that you get weird effects. Something to keep in mind.

  5. Mike

    @Emm I don't fault you for making people aware of a product, I'm thankful for all your contributions to the film-making community man. There are other sites that have reported the same product, what bothers me is that every time a problem with a Fotodiox product is exposed they (Including Bohus) fall behind the excuse of ignorance. When the first speed booster (Light Cannon) they produced was shown to produce a soft image they re branded it as a lens modifier. Then they release the Excel +1. They failed to mention until after it's released (Because they took pre orders before people could wise up)that it can only be used at f4 and above. They constantly claim the person testing just weren't quite savvy enough to notice a problem. ENOUGH FOTODIOX! Be honest and stop trying to pass your brand off as a "Pro" company. (End rant... lol)

  6. Pixcanfly

    On the contrary I think it is good that we have a platform like this site to showcase products- both good and bad quality stuff. Otherwise I wouldn't know there are so many negative feedback on Fotodiox products. So basically the user comments will help me to be more discerning when buying Fotodiox

  7. Sophek

    @Bohus - thanks for the video, this looks very promising. One question I have, it seems the adapter is for other lenses, ie canon, nikon etc. What if we want to use the adapter to use the MFT lenses, is there a MFT to MFT adapter?

    I hope I'm asking this correctly, sorry for my poor english.


  8. @Bohus - Thank you for taking the time to address the concerns above. I have ordered two of these to test out on our GH3's and hopefully I can return with a review of my own at some point.

    I've been waiting since March 12th for the Canon EF/m43 version.

  9. Mike

    Bohus don't lie, it's a know flaw with the design. The amazon listing say's "Sold by fotodiox Inc. and Fulfilled by Amazon." When I returned it I spoke to customer service and they acknowledged the issue.

  10. bohus

    Hi, everybody. Bohus here - I'm the guy in the video. Let me answer a few of the issues that have come up here.

    @aaron - the color tint in the Ren Faire footage is from that LUT we were using. We're still experimenting with the BMPCC, so we kind of used a drag & drop LUT and left it at that. Clearly we should have massaged it more. I do intend to set aside some time and up my knowledge on this new era in grading technology. I shot all that stuff solo, so this one is on me...

    @james - yes, the Excell +1 is "controversial" to say the least. Long story short, the Excell +1 is an inexpensive focal reducer - it'll do a lot of the same things a SpeedBooster will do.. except your lens has to be at an f4 or above (some zooms I found work lower than that, but let's say f4 to be conservative). Some folks online decided the Excell +1 was a copy of the SpeedBooster, and judged it that way. I put out a video after I'd rented an SB, and found it excellent - as it should be. That's why it costs more. I guess that we should have done a better job saying that it's NOT equivalent to an SB... but that's a weird message to lead with. 😉

    As for stacking the adapters, you can do that.. you'll just have to keep flange distance in mind so that the combo actually works for you. 😉

    @Jose & Mike - I'm really sorry to hear that you both had build quality issues. That's pretty unusual. Fotodiox has been building adapters for more than ten years, the company is founded on those adapters. One thing you should know is that there are bootleg adapters out there that bear the Fotodiox name. I know how strange that must sound... and it's difficult to police that problem if you got your adapter via Amazon or Ebay.

    Did you ever contact Fotodiox to let them know? They tend to have a generous replacement policy. No adapter should ever fail like that.

    @OldCorpse - The cross pattern you mention only happens in front of the lens. having the vari ND behind the lens eliminates that issue. As fort he actual quality, Emm has an ND Throttle to play with, so hopefully he'll have a review up soon.

    As for the optical quality, our filters are made in the exact same factory as one of the major filter makers mentioned here.

    And yes - you're exactly right to want to wait for some independent reviews. We're getting better with putting our gear in the hands of pros for Beta testing and outside feedback. We're working on it, everyone.

    Thanks for this chance to answer some questions. happy to tell you whatever else I know. Ask away!

  11. If meatabones took this technology and teamed up with a high quality glass company like tiffan or heliopan and added electronic connections to the adapter they would double, triple there sales! Everyone with a VND in there bag like myself would seriously upgrade

  12. James

    Hi Emm,

    Thanks for the post. I would like to get a speed booster/lens turbo for Nikon G, to MFT. The metabones is too expensive for me right now, the Fotodiox seems to be getting negative reviews, and the Mitakon Zhongyi has no aperture control (i think?) do you think it would be possible to do a pass through a lens throttle to get aperture control, and then through a lens turbo? I suppose costs would be adding up close to a metabones by that stage. Suggestions?



  13. all the footage in the videos seem to have almost a grey tint to it. Maybe it was shot flat and not color corrected well? or perhaps that's part of a color cast?

  14. Jose

    Same thing happened to me with a fotodiox adapter. The thing split in half and my brand new sigma lens fell in the mud.

  15. OldCorpse

    Great if it works, but the key question is going to be "how is the optical quality" - variable NDs can be good, mediocre or bad, and I'd like to know where the Fotodiox ones fall - is there a color shift, is there a cross pattern, is there any loss of resolution etc. I have some of the best VNDs on the market, the Heliopan and the Genus and even so, you can definitely see minor issues, and if you go to worse quality VNDs those become big issues. So for me it's crucial - how is the optical quality? I'll await reports before buying - don't just assume it's going to be good, or rely on marketing, await tests and user experience, even if you have to pay a couple of bucks more, IMHO (learned that lesson after my early adopter experience with Fotodiox and their focal reducer).

  16. Mike

    Really enjoy this thing, but don't have electronic conection... sad, but can't control the aperture or the IS on the lens...

    Cheers! 😉

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