When you are first building your scene, set some cameras first. The reason for this is that when the model has no textures on it, it’s very quick to set cameras. After you have set them you can start adding materials. The way materials look is dependant partly on the camera, and where the light catches the model. Therefore, once you have added the camera, create some basic materials, then add some lighting, finally give your materials some desired tweaks to match the camera and lighting.