This may be a very noob, obvious question:
I shot a roll of Super 16mm film (to be clear: Super 16mm camera, lenses, 16mm Kodak film). My
understanding is that the native aspect ratio for Super 16mm is 1.66, and I was told that my film, scanned on a Scanity, was scanned at 1.66
The resulting individual frames from the scan include portions of the sprocket holes as well as the curvature at the corners. These are elements that need to be removed from the final image. The only ways I can see to do this are to either crop them out or to enlarge the image until they are no longer seen.
It seems to me that to crop (blanking) them out would be to change the aspect ratio, even if only minimally, and to enlarge the image is to degrade the image by reducing its resolution, if only minimally. To need to enlarge the image means that the resolution at which I had it scanned isn't "true," meaning it's not truly 4K or 2K if I have to enlarge the image to remove these elements.
Am I correct? Are these problems taken care of when an aspect ratio card is properly filmed at the head of the reel? Is there a standard protocol that is followed with scanned images that include pieces of the sprocket holes and curved corners (as in, enlarge it .023 percent, etc.)? Is it the fault of the lab? Is it the fault of my camera?
In case it's relevant, I am using Davinci Resolve 12.5 (free version). Davinci shows the whole scanned frame (with the elements I wish to remove) as being 1.66.