Sady Fofana on Twitter: "made a quick focal length chart for some of u blender peeps (and 3d peeps in general) to show the difference between camera mm sizes #b3d #blender #b280 #
![Is there any way to calculate camera focal length and sensor size from a single image? - Blender Stack Exchange Is there any way to calculate camera focal length and sensor size from a single image? - Blender Stack Exchange](https://i.stack.imgur.com/MXC4E.jpg)
Is there any way to calculate camera focal length and sensor size from a single image? - Blender Stack Exchange
![GitHub - mrossini-ethz/camera-calibration-pvr: Blender Add-On: Camera Calibration using Perspective Views of Rectangles GitHub - mrossini-ethz/camera-calibration-pvr: Blender Add-On: Camera Calibration using Perspective Views of Rectangles](https://raw.githubusercontent.com/wiki/mrossini-ethz/camera-calibration-pvr/images/focal+y.gif)