Product that emits bright light

My 3D Spin

I am looking for a product that emits strong light like a sun or flood light. So in renders you
can see the actual rays of that light and not only the fall off.

Fishtales

If you mean God Rays then they have to pass through a volume for them to show up.

There are a few products in the store that do it or you can make your own

https://www.daz3d.com/catalogsearch/result/?q=godrays

Tutorial

https://www.deviantart.com/sickleyield/journal/Tutorial-Creating-Dust-And-Atmosphere-in-Iray-522291773

 

CGHipster

Epic God Rays is a fantastic product and delivers on its promise.  Just be mindful to read the documentation and watch his tutorial.  He also makes an amazing animated dust particle that works extremely well with the rays.