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Hello, and sorry if this has been posted before. I got to capture a nice headland shot of a lighthouse. I set up the camera to capture 5 images in a burst - in JPEG and DNG format. When I use AF HDR merge function with the JPEG images - the image comes out correctly, with a relatively flat horizon However, when I use the DNG images - and the HDR process starts; a pronounced curvature is given to the image. Not what I am looking for. The original DNG flies are exactly the same as the JPEG, with the same horizon aspects. Any pointers please? This on Affinity Photo 1.8.3, using iMac OS Catalina 10.15.6 I've attached screenshots of the image to show what I am on about - you can plainly see in the HDR DNG images the upper corners of the image have dropped against the text.