Sony Firmware Update Allows Shutter To Close While Changing Lenses

Regular readers know that I made the switch from DSLR to mirrorless a few months ago, and with that, a switch from Canon to Sony. I had been preparing an article that addresses the main problems I have encountered, and the main frustrations I felt during that switch, but Sony just solved one of the biggest issues with their latest firmware update for the A9 II.

Firmware version 2.0 for the Sony A9 II includes several minor tweaks, but by far the most important is the option to close the camera’s shutter when the camera is powered down. This means that when you are changing lenses in the field, or removing a lens to add a teleconverter, you shouldn’t have any issues with dust and other crud getting all over your sensor. Instead of the sensor being open to the elements as it is with most mirrorless cameras (apart from the Canon EOS R), the shutter is now closed when the camera is powered down, sealing the sensor away from airborne debris.

At the moment this update is only for the flagship A9 II, but I’m sure we will see it come to other existing cameras, and future cameras as a standard feature. Now, Sony can’t be credited for inventing this idea. The kudos for that has to go to Canon when they launched their EOS R. But I do give Sony Kudos for adding this as a feature because as someone who just switched from DSLR, dust management was really driving me nuts.

Was sensor dust really that much of an issue? I hear you say.

People who have used mirrorless for many years seem to think the issue wasn’t all that bad. I think they have gotten used to it. But in my experience I was basically having to rocket blow my sensor every day I took the camera out. If dust did get on the sensor, the Sony sensor cleaning function – where it vibrates the sensor at high frequency – is not nearly as effective as the Canon one that I was used to. With my DSLRs it would not be unusual for me to go for over a year between needing to resort to getting my rocket blower out and blowing it at the sensor, and there’s no way I needed to carry it in the field with me. When I switched to Sony mirrorless, though, I realized within two days that I was going to need the blower to be a constant part of my camera bag kit.

I’m hopeful that this firmware will solve that issue, and while I’m a happy A9 II user right now, I also hope Sony rolls this update out to my fellow Sony shooters in the very near future.

Firmware 2.0 Downloads

Support details and update procedures can be found here.

Full A9 II Firmware 2.0 Details

Benefits and Improvements from the latest update

  • Adds the Hi Frequency flickerfunction, which allows you to reduce the impact of flickering of artificial light sources (e.g. digital signage, electronic signboards, LED lights, etc.), by more finely adjusting the shutter speed
    NOTE:The Imaging Edge RemoteImaging Edge Mobile, and Remote Camera Toolsoftware will not be supported after April 9th, 2020
  • Improves the Face/Eye Priorityin the AF function:
    • When set to a custom key, the Face/Eye Priorityin the AF function can be activated or deactivated each time the custom key is pressed
    • If Face/Eye Priorityis already set to custom key, this improvement will be available after the camera is updated
  • Improves the Remote Camera Toolfunction by adding support for displaying Focus Framefor almost all scenes
    NOTE:Version 2.00(or later) of the Remote Camera Toolis required. Please update to the latest version.
  • Improves the FTP transfer function
  • Allows the camera’s MAC address to be displayed as a QR code
  • Adds a function to close the shutter when you turn off the camera to prevent dust or debris from adhering to the image sensor when you change lenses
  • Allows you to save or load the customized camera settings to My MENU
  • Improves the overall stability of the camera

For updated function usage and additional information, please refer to the ILCE-9M2 Help Guide. Additionally, a revision has been made to the instruction manual according to this update. The latest version of the instruction manual can be downloaded from referenced website.

Previous Benefits and Improvements

The following benefits and improvements are also included in this update.

  • FTP transfer can be started earlier after shooting pictures
  • Improves the overall stability and performance of the camera:
    • Corrects a condition where the camera can sometimes turn off when playing RAW images
    • Improves JPEG image quality when shooting under specific conditions

Photo of author
Professional photographer based in Yukon, Canada, and founder of Shutter Muse. His editorial work has been featured in publications all over the world, and his commercial clients include brands such as Nike, Apple, Adobe and Red Bull.

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3 thoughts on “Sony Firmware Update Allows Shutter To Close While Changing Lenses”

  1. It seems like a great feature, completely obvious when you think of it. However I can’t say that I’ve ever noticed dust spots on my mirrorless camera – coming from a camera without a sensor clean at shutdown, where I did notice dust, maybe the inbuilt system is enough.

  2. Another much needed update for the Sony A7R 3…

    The color of the focusing frame on the A7R 3 is very difficult to see and track as you move it across the frame. The Sony A7R 4 and the A9 gives you the ability to change the color. I am not sure why that has not been an update to the A7R 3. If I am missing the obvious please let me know.

    In the meantime, thanks for keeping us posted on new developments.

    • Unfortunately, I think the obvious that you might be missing is that they want people to buy the newer cameras. It’s fairly unusual for camera manufacturers to update out-of-date models. I wouldn’t hold out much hope if I were you…


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