Yes, it is only visible when you crop in a lot. I did this on my computer and zoomed in all the way on Windows Photos app. I've tried various SD cards including a V90, but all have the same line, though it is not always in the same place. It is most easy to see when the image is busy - ie branches and such-like. It is mostly vertical, though in the example I posted, near the bottom where the flower is, you can see it horizontally too.