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Gear Rumors

New Canon 400mm F/2.8 Could Feature Built In 1.4x Extender

By Anthony Thurston on July 1st 2014

People all over the globe drooled over the built in 1.4x extender on the latest Canon 200-400mm F/4. It appears that the attention caught Canon’s eye and they could be looking to bring the feature to their next 40mm F/2.8 lens.


Canon’s 200-400mm F/4 w/ built in extender

A new patent uncovered over on Canon Watch shows the plans for a new 400mm F/2.8 lens with the addition of a 1.4x extender. This would be big news for sports and wildlife shooters, as it would give a nice range boost and a much better quality increase over external 1.4 extenders.

[REWIND: Canon 7D Mark II Could Feature 1.3x Viewfinder]

The downside, of course, is that Canon tacks on quite the pretty penny when including features like this, so if a lens such as this does ever come to fruition, don’t expect it to be cheap. I can definitely see this being a highly requested feature for some though.

Canon 400mm F/2.8 w/ Extender Patent


  • Patent Publication No. 2014-115410
    • Publication date 2014.6.26
    • Filing date 2012.12.7
  • Master lens
    • Focal length f = 390.09mm
    • Fno. 2.90
    • Half angle ω = 2.01 °
    • Image height Y = 13.66mm
    • The overall length of the lens 367.66mm
    • BF 44.00mm
    • 15 pieces of 11-group lens configuration
    • Two fluorite
  • Example 1
    • Focal length f =-226.69mm
    • 1.41x magnification
    • Five 4-group lens configuration
    • One piece of one sided aspherical


What are your thoughts on a possible 400mm F/2.8 with a built in extender? Would you want to pay the extra premium for such a feature upgrade?

[via Canon Watch]

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Anthony Thurston is a photographer based in the Salem, Oregon area specializing in Boudoir. He recently started a new project, Fiercely Boudoir to help support the growing boudoir community. Find him over on Instagram. You may also connect with him via Email.

Q&A Discussions

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  1. Dick Raymond

    I love my old Canon 400 f/5.6 lens but I would sell it and my 1.4X plus my 2X extenders in a heart beat so that I could buy this lens! The price is Expensive and my wife would kill me. But what the heck, You Only Live once, so why not go out with a smile on your face? LOL

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  2. Ram Iyer

    nice glass

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  3. Karl Petersson

    btw I did shoot side by side with a guy the other day with the new Canon 200-400 and he was as happy as could be about the lens so I am not questioning quality or convenience, if I had the cash I would by it in an instant but right now I can’t justify that expenditure.

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  4. Karl Petersson

    No of course I see that angle of the argument, but the point is exactly that, is it a 5000$ difference.
    Canons price structure is getting to the extent much more to what they can get away with rather then price relating the the cost of manufacturing.
    And its funny that attitude has been exactly growing at the same rate as their market share.
    I am wondering if there would be a Sigma/Tamron/tokina 200-400 f4 for 7000$ as the nikon and with a package with a 1,4 extender for 500$ how many canon would sell.
    That is I am not saying that Nikon is so great but they are at least 4500$ less for a very similar lens.
    A very similar lens but absolutely not the same lens would be the Sigma 120-300 f2,8 ( I know no IS) and so forth and yes a full 100mm shorter but 80mm wider but its a lens you would look at in similar area (sports, nature) And yes I am sure its not as fast and several other shortcomings but its 3600$ half the price of Nikon and less then a third of the Canon.
    I need to upgrade my current kit and I guess I am just feed up with insane pricing so sorry about my rant.
    Btw a 2x extender from canon is only 500$ as well…..

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  5. Karl Petersson

    Someone has to explain this to me. Nikon 200-400 (without extender) is about 7000$ Canon 200-400 (with extender) is 12000$
    They are very close in reviews and DXO mark puts the canon slightly above the Nikon.
    I have used the Nikon and its wonderful, sharp VERY quick in the focus and I am sure the Canon is VERY good as well and similarly quick sharp and responsive.
    At BH the 1,4 extender (both from Nikon and Canon is about 500$)
    WHY DO YOU WANT TO PAY 5000$ for a product that costs 500$
    This must be the best way in the world how to get 4500$ extra in your pocket if your a stock holder in Canon.
    I am not questioning the product and the never ending Nikon vs Canon debate but how can anyone charge 5000$ for an extender unless its made out of gold and diamonds.
    You can’t even remove it and use it on another lens!!!!!!

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    • Anthony Thurston

      Karl, the simple answer here is that the built in 1.4x extender works better than any 1.4x extender you could add onto the lens because it has been built into the lens and is “tuned” (for lack of a better term off the top of my head) to that specific lens. That being said, is it a $5,000 difference? I don’t know many who would think so, but sometimes your not paying for worth, your paying for convenience.

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    • Herm Tjioe

      In sports event photography those seconds to minutes worth of adding/removing extender can be a costly move worth more than $ 5000

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  6. Mark Mirandilla


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  7. Servando Miramontes

    One beasty lens! Another one of those, “Ill just rent that one….” hahahahaha

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  8. Jared Stewart

    Okay….so we know they can do an updated 400mm 2.8 with 1.4x tele-converter. Shouldn’t they be able to throw the rest of us a bone with an updated 50mm 1.4?

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  9. Stan Rogers

    Ah, ten grand, fifteen grand — it’s barely a couple of 5D bodies or a complete Profoto studio lighting setup, so why quibble?

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  10. Rambo Estrada

    Sounds epic. And expensive.

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