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    Yongnuo announces the YN RF 85mm f/1.8R DF DSM

    By 31 Comments4 Mins Read Third Party Lenses
    yongnuorf85 - Yongnuo announces the YN RF 85mm f/1.8R DF DSM

    Yongnuo has announced the autofocus YN RF 85mm f/1.8R DF DSM lens. This also appears to be the first third-party lens with a control ring. You can select between manual focus or control ring functions with a switch on the side of the lens.

    You can check out all of the known RF mount lenses here. Let me know if there are any lenses missing.

    About the YN RF 85mm f/1.8R DF DSM

    Small body, lightweight

    This product is designed for RF mount mirrorless camera，the maximum diameter and length of the lens is about 67×88mm, and the net weight is only about 380g. The lightweight design is good for long-term handhold shooting and video recording.

    Equipped with a control ring, supports silent operation

    Users can assign common functions such as aperture, shutter speed, ISO sensitivity, etc. to the control ring according to their needs. Rotating the control ring can quickly adjust the corresponding parameters, greatly improving operation convenience creative efficiency.

    The lens is also designed with a “Click” switch: After Click is turned on, turning the control ring will have a clear sense of gear and a “click” sound; When the Click is turned off, turning the control ring will not make any noise, which is helpful during video recording.

    Note: The control ring and manual focus ring are integrated designs, please set the switch to the corresponding position when using.

    Equipped with AF/MF focus mode switch，supports full-time manual focus.

    Through the AF/MF focus mode switch, you can quickly switch the focus mode. When the autofocus operation is set to [ONE SHOT], you can focus manually after you keep pressing the shutter button halfway to complete the focus (full-time manual focus).

    Note: The full-time manual focus function can only be used normally after enabling the corresponding settings on the camera. For detailed operations, please refer to the camera manual.

    Equipped with quiet DSM stepping motor

    Digitally controlled stepping motor (DSM) has a quick start-stop response, high focusing accuracy, and quieter focusing action, which is suitable for photo shooting and video recording.

    The lens mount is equipped with a dust-proof and water-proof rubber ring

    The lens mount is equipped with a dust-proof and water-proof rubber ring，which can effectively resist the entry of dust and water droplets.

    Note: The mount position of this lens has a certain degree of waterproof performance, but it is not completely waterproof. If you are shooting in rainy weather, please try to keep the lens from getting wet.

    Equipped with a low-dispersion lens

    Equipped with one low-dispersion glass, which can effectively suppress the dispersion problem.

    With 9 optical lenses in 8 groups, the nano-multilayer coating process

    The lens adopts an optical structure of 9 lenses in 8 groups, and the lens has a nano-multilayer coating process, which can effectively increase the light transmittance and suppress back-light ghosts and glare.

    F1.8 large aperture, 7 aperture blades

    Flexible use of F1.8 large aperture, easy to obtain soft blur effect, highlighting the subject.

    The lens is designed with 7 aperture blades. It can shoot circular diffuse spots. It can also take pictures with 14 starburst effects if the aperture is appropriately reduced.

    USB firmware upgrade

    Equipped with a USB Type-C interface, you can download the latest firmware to upgrade the lens to keep the lens at its best performance.

    Metal bayonet, gold-plated contacts

    The lens adopts high-precision metal bayonet and gold-plated contacts, which can effectively improve the signal conductivity and corrosion resistance. At the same time, it can maintain reliable communication between the camera and the lens, and realize functions such as autofocus, aperture control, and EXIF information transmission.

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    31 comments


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    2. Christopher Frost has a good review of this lens on You Tube. Seems to be cheap and cheerful . Good value for us non professional amateurs. However, since I already have the Samyang I will not be buying.
    3. It's good to see some one else rolling out lenses for this system. Not only will they make a more affordable option but they will put pressure on Canon over their own prices. Also the third party guys some times come up with some really great formulas that Canon can't be bothered with. The Laowa probe lens being just one example.
    6. Been in the RF world for over a year now and still haven't touched a control ring. Reminds me of the Touch Bar on my last Mac. Something I had to pay extra for, but never used.
      Wonder if it’s something that if you’re newer, you adapt to. I use it for exposure comp. Actually use it a fair bit.
    7. Wonder if it’s something that if you’re newer, you adapt to. I use it for exposure comp. Actually use it a fair bit.
      Quite possibly. The other issue is, I don't have one on all the lenses I use. So if my sense memory were to start getting used to it, I'd be frustrated the next time I used an EF lens. If all my lenses had one, I might assign it something and try and force myself.
    9. I use it for exposure comp, and it’s locked out unless the shutter release is partly depressed.
      I use it exclusively for ISO adjustment when I AV mode for photography or M mode in manual. Mode wheel is my exposure compensation and AF type selector.
    10. Exposure compensation can be easily done in both DSLRs and mirrorless by configuring the set button accordingly so It can change when we press set and turn the wheel at the same time. Very flexible and control ring and camera model independent.
    13. This is the first third party lens to feature a control ring isn't it?
      Quite a breakthrough, as it means that they've used more than only the EF protocol.
    14. I tend to shoot in full manual mode using the Fv setting. Top ring is set to vary speed and the control ring of the 100-500mm to vary iso. The control ring is useful. I also use the touchbar on my MacBook.
    16. Been in the RF world for over a year now and still haven't touched a control ring. Reminds me of the Touch Bar on my last Mac. Something I had to pay extra for, but never used.
      I thought I'd find the control ring useful for setting exposure compensation, but I found I never did it that way because it was hard to break from old habits. Instead, I'd press the shutter halfway and use one of the camera dials like on my EF bodies. Then one day I noticed I had some unexpectedly over- and under-exposed photos. I had accidentally turned the control ring and adjusted exposure compensation. I forget which lens it was. After that, I disabled the control ring to prevent future accidents since I wasn't using it anyway. I'm glad other folks are able to make use of it.

      As for this Yongnuo, I'm happy to see another choice for RF lenses. Not sure I'd spend $400 for this because I'd rather spend more for the Canon and get IS plus a shorter MFD. I'm sticking with my EF 85mm f/1.8 and Sigma 85mm Art while I wait for the price of the Canon RF 85mm f/2 to drop a bit.
    18. It's good to see some one else rolling out lenses for this system. Not only will they make a more affordable option but they will put pressure on Canon over their own prices. Also the third party guys some times come up with some really great formulas that Canon can't be bothered with. The Laowa probe lens being just one example.
      I am not so sure about that.
      Decades of third party lenses haven't stopped them yet.
    19. I use it for exposure comp, and it’s locked out unless the shutter release is partly depressed.
      Ok not trolling, just something I've been wondering.

      When and why do you use exposure compensation? Why not just set the exposure to what you want?

      I've never really used it so not sure what it is there for....

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