This old version of the add-on is not maintained anymore, and is probably not compatible with Blender 2.9.
Version 3 is supports Blender 2.8x and 2.9x versions, it is available here: https://gumroad.com/l/cQTgl
The new version 3 is also included in my Lightpack 01 product: https://gumroad.com/l/oHhFAU
This add-on for Blender 2.8 adds new Physical Camera settings for EEVEE, Cycles and LuxCore.
- Exposure using real camera settings (ISO, Aperture, Shutter Speed) or more artist-friendly controls (EV value)
- Motion Blur control using Shutter Speed or Shutter Angle
- White Balancing with viewport picker
- Resolution per camera with artist-friendly presets
- Autofocus (Single, Continuous or Tracking)
- Camera list and Master Camera that can switch between camera
For more information on how to use the add-on, please watch my Youtube channel (keep in mind that the videos about version 3 shows features that are not available in the free version): https://www.youtube.com/playlist?list=PLDS3IanhbCIXERthzS7cWG1lnGQwQq5vB