I would like to make a custom Rendering - vray like - in unity, I have the Scene set/ game done and as its byproduct I would like to do a few Renderings in printing Quality.
It is important to be able to set the output resolution, etc.
Is there any way, either built in or a plugin, that would make this possible?
Not sure what you mean by vray like - Unity isn’t a ray tracer. You can render the scene to a larger offscreen buffer though so you get a higher resolution screenshot. Take a look at Application.CaptureScreenshot which lets you pass a parameter to control how big of a render buffer to render the scene too.
You’re going to want to have your camera render to a render texture that is set to the resolution you want to output, then use an image effect on the render texture.