Sigma AF 120-400mm f/4.5-5.6 APO DG OS HSM

(7 customer reviews)

Sigma AF 120-400mm f/4.5-5.6 APO DG OS HSM is a camera glass that allows you to zoom in and out, capturing distant objects with great detail. It has a great focus system, both automatic and manual, which allows you to adjust the focus to your liking. The lens is made up of many glass elements that help to reduce distortions and improve image quality. The lens coating helps to reduce glare and improve contrast. The lens is well-built and durable, making it a great choice for photographers who need a reliable lens. The lens has a wide aperture range, which allows you to capture images in a variety of lighting conditions. The lens has a great resolution, which means that your images will be sharp and clear. If you are looking for an alternative to this lens, you can consider other ultra-telephoto zoom lenses available in the market. The lens is a great choice for photographers who want to capture wildlife, sports, or other distant objects.


  • Great value for money compared to Canon lenses with similar focal length
  • Good quality images, close to Canon lenses in terms of sharpness and clarity
  • Optical stabilization works well and is a helpful feature
  • The lens is versatile, making it suitable for various types of photography
  • Autofocus is fast and accurate
  • Lightweight and easy to handle even for extended periods of time


  • The lens is not weather-sealed, which could be an issue in certain conditions
  • The aperture range is somewhat limited, which may impact low light performance
  • Chromatic aberrations and distortion may occur in some situations


  • Overall, the Sigma AF 120-400mm f/4.5-5.6 APO DG OS HSM is an excellent lens that offers impressive image quality, useful features, and a reasonable price. While it may not match up to top-of-the-line Canon lenses, it’s a great alternative for photographers who want a high-quality telephoto lens without breaking the bank. Just be aware of the limitations and potential drawbacks before deciding if this lens is right for you.

Optical design

Great choice mainly for good light conditions Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result. It is a ring-type ultrasonic motor designed to provide quick and silent focusing.

Physical characteristics

With a lens filter diameter of 77 mm this lens deserves a good quality filter, this is commonly filter size, presents numerous filter possibilities. Weights 1750 grams so it is a heavy lens, consider using its own lens bag. 203 mm long, with this size carry only if you use it.

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7 reviews for Sigma AF 120-400mm f/4.5-5.6 APO DG OS HSM


    7.0 user rated as 4.57/5

  2. rated as 4.45/5

  3. Mar 25, 2017

    First sigma lens I got this lens at a very great price, even though this lens has been out of production for awhile now, mine is brand new display model. I am realitively new to photography and bought this for birding and other wildlife since I couldn’t afford the canon l series lens. The one thing I did notice is this lens needs light, unfortunately it is overcast here now so haven’t really got a true feeling of what it’s really capable of in good conditions . Another I did notice is lens aberration is a lot better then my kit zoom so that’s definitely a plus. I did read the af hunted alot on other post but have not had that issue although the motor is a bit loud but doesn’t bother me. Seems as fast as my Canon lens.

  4. Apr 18, 2019

    good lens but autofocus broke It’s a good lens when it works. I’ve only used it maybe five times and it already broke. The focus has always seemed to lock up after a while and I would either need to turn off and on my camera or detach and re-attach the lens to get it working again. This was seemingly a common problem as certain serial numbers were recalled back in 2010. But now after my five uses, it has just completely locked up and shut down. Pressing my focus button does nothing at all.

  5. Nov 01, 2014

    FANTASTIC for the price!!! Go for it !!! I decided to try this instead of the Canon 70-300 USM lens, for my new zoom lens. I love it !! It is huge and heavy – but I knew that going in and I don’t mind carrying it. I don’t like tri pods – and this guys works great hand held on my 7D. I use it so I can take candid’s of my kids without them knowing – else they don’t make a natural face. I LOVE IT – and ebay allowed me to find it and a great used price.

  6. Jun 02, 2016

    Good Value This lens is a good value works well with sharp image at a bargain price. Works well with the auto focus as well as the image stabilizer. I feel it is a very goo value.

  7. Jul 25, 2018

    Great lens Love this lens and glad I bought it. Why spend thousands of dollars on a Canon lens when you can get just about the same quality from a cheaper lens. It’s nothing like a Canon lens but it’s pretty damn close. This will always be in my camera bag if not always on my Canon 80D.

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