How  to calculate precise vertical and horizontal field of view of camera in  photo and video mode, if SDK 4 returns only 35mm equivalent focal  length, but no matrix size or its original aspect ratio or its maximal  resolution?

  

To be able to calculate FoV we need one of this options:
1) Real matrix size in mm to calculate crop factor and then real  focal length and then angles from real size and real focal length
2) Original aspect ratio to calculate equivalent 35 mm matrix size  with the same diagonal and then use its dimension and 35 mm focal  length.
3) Original maximal resolution to calculate original aspect ratio and do as in p.2

  

But DJI SDK has nothing except 35 mm focal length and currently selected aspect ratio which may not equal original.

  

Could somebody explain how to calculate precise vertical and horizontal fov?

Hi! You might be better off posting your question in the 'Developer' section of this forum.  That is way more active.    -   From https://developer.dji.com you can click Forum to access it or a direct link to it is - https://forum.dji.com/forum-139-1.html?from=developer

DAFlys Posted at 3-18 01:01
Hi! You might be better off posting your question in the 'Developer' section of this forum.  That is way more active.    -   From https://developer.dji.com you can click Forum to access it or a direct link to it is - https://forum.dji.com/forum-139-1.html?from=developer

Thanks. Will do.

SuffiX Posted at 3-18 02:06
Thanks. Will do.

You're very welcome.