ok this title sounds maybe a bit weird so let me explain first. The gold standard for colon examination is the colonoscopy, so a camera inside you. But the problem is you can't say the camera pose (location + orientation) at any time. Thank you, there is Blender, so I try from a CT scan to simulate a colonoscopy with Blender. It is working good so far, the CT scan is transformed in a pretty good blender-model and the animation is done.
For this a attached a spot light to my camera, it is pointing in the same direction, like in a real scenario. In generall it is fine, but I want to make it as real as possible. So lets have a look on a real colonoscopy image and my rendered image, before we go ahead.
Those two images will never look the same, because there are no texture informations for blender and there never will be. So please ignore texture details like veins and so on. Even the red color which is made from a simple material is not important. But my point is to get the most realistic light, shadow, reflections as possible in this image. I am newbie and using Blender 2.79b (because of a tutorial), here are my questions:
I need to know if it's better to import the actual settings of the real fisheye camera or simulate it as close as possible wwith Blender. And currently I am using a spotlight, with a size of 2, max bounces of 50 and white color. But how go I get any specular light reflection at all (Except in the other renderers blender and blender game)? I cannot even find an option for the brightness of the spotlight.
If you have any other tipp or reference to improve the quality of my simulation, I would be pretty grateful.