joeseph wrote in post #15948145
actually that second shot doesn't look too diagonal when you wind the brightness right down - I'm voting for either a card issue, or a reader issue.
Not sure if we are looking at the same image. The file information isn't recorded "almost" horizontally. It is recorded 100% totally, absolutely perfectly, horizontally. The white area on that photo starts at a different position for every single scan line, very much making it into a diagonal phenomenon.
When the issue is related to the file, i.e. card, then the error should be perfectly horizontal with mathematical precision. Or it might at a specific location suddenly move up or down with multiple scanlines, such as maybe a full 8 scan lines, more or less, forming a big, very visible, step. Remember the very blocky look you get when looking at a damaged JPEG file? But raw files also align the data perfectly, so neither JPEG nor raw files have file information stored in a way where a card failure produces a diagonal.
That doesn't mean it has to be a shutter issue. There may have been a software issue or a number of different other issues. A timing issue when copying image data scan line by scan line at the same time as new image data arrives scan line by scan line can give these kinds of results, in case the speed of data in and speed of data out differs. Then the camera will get either further and further, or shorter and shorter, on every new scan line before suffering the problem.
At the same time, a shutter who fails to properly close can produce massive overexposure. There seems to be a slight gradient at the white diagonal transition - and a shutter that stops moving would require a tiny distance to slow down, producing a gradient of stronger exposure. Just that the shutter shouldn't normally give such a diagonal either, unless the shutter leaf have come lose on one side. The first photo also shows a bit of a gradient on the left side of the black bar - a gradient that is looking quite a lot like a shutter curtain issue.
Op, if you 've still got the photograph on the card, what does the preview in camera look like?
Comparing preview with final image is always good to do, since a problem in both preview and full image indicates it is an issue the camera processor did see when the photo was actually taken, but before the data was written to the memory card.
But most evidence indicates that this didn't happen because of a broken card.
