For the past few years, I've been tracking shots from Boujou to Blender, using Blender 2.49B to 2.9 (Thats one of the best, non-bugged ways to transfer tracks). Though, shots like this where the "iron-man-arm" is flying towards the subject, it feels so flat! Why is there no sense of depth? From far away to up-close feels like a simple image getting scaled-up. Boujou wants to set the focal lenth to 73-ish in Blender- but makes the motion tracking points not line up with the footage. So once I manually change the focal-length to have the motion tracks line up perfectly with the footage, I get that loss of depth the camera had previously. In addition, the tracking-points line up with the exact focal-length my camera was filming at, so clearly me manually lining up the track is the right way to go- I think.

If you want to see the HD-version

Rendered, tracked shot

Boujou focal length. Depth is there, tracks aren't. automated focal length

Manually-changed focal length. Depth is flat, tracks are correct. manual change in focal length

  • $\begingroup$ is the sensor size the same as in the tracking software? The lens would not cover the same field of view otherwise. $\endgroup$ – susu Aug 28 '20 at 17:36
  • $\begingroup$ @susu I'll look into that, thanks. $\endgroup$ – Jaden Williams Aug 29 '20 at 13:31

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.