3D renderings tend to be very clean. The defined contours, clear spills and transparent materials are the hallmarks of computer-generated images. Unfortunately, this is not always the case in real life and is not always the most beautiful or the most aesthetic. This is partly due to the lack of Fresnel effect.
The Fresnel effect is a sophisticated way of referring to the edges that fall. This Fresnel effect is not easy to achieve with the standard 3D application only. In fact, regardless of the rendering engine used by the 3D image rendering application you choose, there can still be adjustments and greater control thanks to the rendering of multiple steps.
Multistep representation is a way of representing a final scene as a group of separate movies or images. Each of these individual images contains only a part of the visual information necessary for the scene. All secular reflections can be contained, others can simply include reflections, etc.
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| 3D Rendering |
The strength of this lies in the ability to combine them all together in Photoshop or After Effects while allowing you to fully control each of these feature clips. In addition to the Fresnel effect shown above, consider this example: a client wants a 10-second movie (300 images) of two high secular objects sitting side by side on the floor.
Rendering these 300 high-resolution images with a lot of ant aliasing and oversampling may take some time. When seeing the final representation, the client thinks that the strong points (secular qualities) are too intense and he wants them to be more subtle and more "yellowish".
Doing these 300 images again would take a lot of time. However, if the result that is shown to the client is a result that consists of colors and reflections, the changes would be quite simple.
All you need to do is change the color of the highlights in Aftereffects, and the re-composed movie will include all the new visual changes without the need for a long 3D rendering. Unfortunately, this control has a cost and additional returns. However, once these representations are added, the flexibility in the control of the strength of the reflections, diffusions and/or secular qualities is infinite.



