I noticed a lot of dusty spots in my images and it looks like it’s from the bottom side of the shutter box, between the sensor screen and the mount?

Can someone enlighten me if this?

shutter box


Here is a photo Here is a photo which I discovered the issue. See the dusty spots at the top of the photo. I've contacted Sony and they already sent me a shipping label.

  • More info please, what lens's are you using. Is there any unusual friction or behaviors that may be relevant, etc. ?
    – Alaska Man
    Dec 28 '20 at 16:54

I have had the same on my old a7 III before I sold it off.

The reason I sold it, was partly because of the feature envy to the a7r IV, partly due to more and more broken shutter issues were appearing in the facebook groups centered around that camera.

It seems that Sony saved a bit on that camera's shutter. The shutter life is rated for appr. 200,000 releases. However the amount of shutter failures seemed quite odd to me. Some only had like 15K to 30K actuations before the shutter failed.

When I sold my camera, the shutter was working fine, but I saw the same abrasions that you had, which I do not have on my newer cam. You could try to contact Sony about it, but I am not very positive they would exchange the shutter (costs around $300) if there was no failure yet.

What likely will happen, is that the serration of the edge will get worse until the shutter will catch on one of these edges and then rip apart.

  • 1
    Thanks for the details! This camera is only a few months old. So it’s still very much under warranty. I hope I can continue to take shots until I return home.
    – Adam Lee
    Dec 28 '20 at 20:30

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.