This is my current project I am working at rendered in Cycles (only 200-500 samples as long as it is WIP).
All “Rusticles” and dirt thingies are made with particle-systems. I only modeled 8-15 objects, but displaying ~100,000 objects with the particle system
The submersible is still lacking of detail. Also the Titanic wrack needs much more “junk” and pieces of wreckage. Also the interior and top of the Titanic need to be modeled more detailed.
The light is a very difficult approach in Cycles as there is the lack of the volumetric lightning. Until now I use a Cone with a simple particle system to simulate the spotlight lighten up the dust in the seawater…
I know these are very dark renderings; remember that original footage is much more darker and limited, so this is an artificial view of the wreck.
Tell me what you think
Only for understatement here is a very unrealistic, but brighter version:
If you are not familiar with the wreck, here is an original picture: