I just did my first Mini 3 dng images and there is definitely an issue with mine. I am up to date on firmware as of June 18, 2022 but what I am seeing is NOT vignetting proper. Vignetting refers to darkening or lightening of the corners. My DNG files show the left and right sides darker than the center. If I use the Vignette tool in Photoshop, by the time the middle areas of the left or right sides are the same exposure as the center section the corners are too light. This is really nasty and for me, this means DNG files from my mini3 are worthless. I know I can fix them in PS using layers and masking but THAT is not going to happen. This isn't a deal breaker. I won't send it back based on this unless I learn my problem is not being experienced by others then I'll look for a "repair" but I think this has been noticed by others. I'll return it for repair at some point but I have a need for it for the next month or two and we'll see what transpires. Hopefully a firmware update will take care of this.