3D Rendering is a field I'm relatively new to, and I'm rather limited by the available hardware (my ageing gaming rig isn't really cut out for producing high-quality renders, so to avoid multi-day production times I tend to have to work at lower quality).
However, the possibilities opened up by relatively easy access to the technology behind 3D are endless. The images showcased here are mostly experimental - I've used 3D rendered images more effectively in my motion graphics, where they blend better with other elements.
The core software I've learned to use is Blender, which is highly capable and - critically - free. I have a bit of experience with Maxon Cinema 4D, but am unable to fund my own access to it, and whilst I will pursue further experience and training with it the process is considerably hindered by the very high entry costs.
These are straightforward examples of the learning process, and glass is one of the most satisfying things to render in 3D.