The quality of a picture rendered with a computer depends on various criteria like point of view where the camera is place or the lens of the camera with its field of view and depth of field, size in pixels of the computed image or the lights in the scene.

Use IES Light Profiles for Photo metric Lighting

Alongside the rise of linear workflow, 3D artists especially those working in architectural visualisation have begun using files called IES light profiles to more convincingly imitate real world lighting. IES profiles were originally created by manufacturers like General Electric as a way to digitally count photo metric lighting data. Because IES light profiles contain accurate photo metric material regarding light figure, luminance and drop. 3D developers have seized the opportunity to add IES support in most major 3D packages.

Grime it Up

Most real world objects aren’t spotless and untouched so leaving your models that way can come off as idle and will almost certainly weaken your quest for photo-realism. It doesn’t just have to be textural details either—try adding large-scale cracks and destruction to some of your models.Keep the idea of non-perfection in mind when you’re populating your scenes too. Unless you’re going for a very polished architectural showroom type render, scatter some props naturally throughout your scene to make the space look lived in.

Understand Composition

One thing all best renderings have is an interesting composition. The best renderings make use of interesting angles, camera zoom levels, and depth of field. Try to be very much familiar with how to manipulate all of these settings and you will find that renderings will become much more pleasing to the eye.

Scene setting

There are a number of important scenes settings that have a dramatic impact on the look of overall image. Among other things, this setting allows to control the overall brightness of the rendering, the brightness of the background, and the rotation of the scene.