I am doing a side gig for a land sales company, I am shooting with a Hasselblad X2D 100C which has an aspect ratio of 4:3, the requirement for the images I send to the side gig is that they have an aspect ratio of 16:9
I’m un-sure how to convert the images, maybe I can do it with Darktable or Gimp?
You will need to carefully compose your shots when you take them and visualize a 16:9 ratio. you will then crop the image to that shape losing lots at the top and bottom of the frame.
According to Google search, you can change the capture ratio to 16:9 on the Hasselblad X2D 100C.The camera features an in-camera Crop Mode that includes 16:9. That would be best for this type of shooting.