FocalPlotter

Annoyed of having to open fspy, doing stuff there and then opening up blender? Why don't you just do it all in one application? Well, here it is.

FSpy Addon for within blender itself. Features: Focal Point Plotting with 2-3 axis, Reference images, Setting render resolution automatically, Composition guides, Automatic camera settings, dot and line dragging, Guides (freeze Guides, Show Horizon line), flatten horizon line, Camera Distance, Optical Center offset, Target (world center/coord), camera keyframes, Move objects along view and Adding projection cubes automatically.

Usage:

1. Download the .zip file
2. Open blender
3. Press cmd + , to open the preferences
4. Select "Get Extensions" from the left sidebar
5. Press the top right dropdown arrow
6. Select "Install from Disk"
7. Select the downloaded .zip file
8. Select "Add-Ons" from the left sidebar
9. Ensure „FocalPlotter" is enabled
10. Optional: change the settings
11. Enjoy