If you use your own render farm, you will have to install the add-on on all the farm computers. You should not have to activate the add-on in the preferences on all the machines, you can always enable the add-on through script in your scene file.

If you are using a commercial render farm that doesn't allow you to use your own add-ons, this is trickier. Animations or Render Queue are not currently supported.

Unfortunately no. Lens effects such as vignetting, chromatic aberration and lens distortion should be done in Compositing, and this is outside the scope of the Photographer add-on at the moment.

It comes with a few Physical Light presets, but it is very easy to create your own and share them with the community! If you are looking for high-quality Lamp assets that are physically accurate, have a look at my other LightPack products!

First, make sure that the add-on is properly installed.

If the error still persists, please reach out to me on the platform where you bought the add-on or on the Blender Artist forum: https://blenderartists.org/t/photographer-camera-exposure-white-balance-autofocus-and-physical-lights/1101721/

Please provide as much information as possible:
- Blender version
- Add-on version
- Error message (which can be found in Window > System Console)
- A screenshot or GIF of the issue
- A simple scene where the error can be easily reproduced.

You should already have received a coupon to upgrade to Photographer 4, but you can always contact me with a proof that you bought Photographer 3 and I will send you another coupon as soon as possible.