I myself am no rendering expert. The type of work I do in the office often doesn't give me the opportunity to play with rendering as much as I would like. There are a number of rendering tips out there though, that I often refer too and share with others.
I have collated a handful of them (some new, some old), hopefully they can assist you in getting the best outcomes from your rendering.
- Student using cloud rendering (Revit Kid)
- Custom materials - (Creating a Bump file) (Revit Kid)
- Cloud rendering - Inconsistent Colours (Revit Kid)
- Troubleshooting Revit Materials (Revit Clinic)
- Rendering Tips (Revit Clinic)
- Realism to glass (Revit Kid)
- Revit 2016 - Render using Coarse Poche Material (Revit Clinic)
- Render in Revit 2016 - Rendering Engines (Revit OpEd)
- Render Them Speechless
Remember, a good rendering takes a lot of hours. Ensure you allow enough time in your program to spend on materials and lighting and also decide which rendering engine you will use from the start, as outcomes will vary. Also don't forget, Revit doesn't have to have the last word on the final render. Don't hesitate to take your final render into photoshop afterwards to make any final lighting and material tweaks to improve the final image.
Finally, if you create a good quality material or bump file, don't lose it! Start your own material library and keep materials, entourage, lighting settings etc filed away, ready for next time.