Here is a printable (PDF) version of this tutorial. It contains much better images than the automatically processed copies, which you can see in this post.
In my previous post I “fitted” my model of the P-40B into modern photo of a restored aircraft. (Precise speaking, it was a photo of the P-40C, but there were no external differences between these two versions). In general, I used Blender camera object to “pose” the 3D model so in the camera frame it looks just like the aircraft depicted in the photo. One of the key information that I used for this “fitting” was the lens focal length used for making the reference photo. (Modern cameras save key technical parameters in the resulting image file). I could just read this length from the photo properties, write it to the corresponding Blender camera Focal Length property, and focus on determining the remaining unknowns: camera location and direction.
However, how to use the historical “analog” pictures for such a match? (For example – this original Curtiss photo of the Tomahawk IA from November 1940:)
Airplanes in 3D 