Dear Frans van den Bergh, Thank you for creating this wonderful tool, MTF Mapper. I would like to use it to test the lenses of my camera. For this purpose, I need to adapt the field of view to be approximately 13 times smaller than the A4 format and to have a different aspect ratio. Additionally, there are cases where the field of view is not rectangular but circular or oval. At the moment, I don't fully understand all the details about how the code functions. I have a few questions: Should the chart...