In this tutorial we will cover how to recreate a simple photographic lighting studio setup that can be used for lighting and rendering all manner of objects. We will use a combination of Arnold area quad lights and HDR maps for creating realistic specular reflections in the scene. The HDR maps will provide rich specular reflections in the surface of any model that sits in front of it and will add to the photo-realism of the final render.
The scene consists of a curved backdrop with a floor plane and one plane on either side with a dark grey Standard Surface shader assigned to both of them.
- Create an Arnold area light for each of the three lights - top, left and right. These will represent large soft boxes as used in a photographic studio.
Change the light type to 'Quad' for each of the lights
HDR maps have been used in this tutorial. If you do not want to use file textures, simple box ramp texture maps could be used, however the reflections in your model will not appear as realistic.
Left to right: softbox_midlle_wrm.HDR, softbox_midlle_cold.HDR, softbox_square_gs.HDR.
- Connect each HDR map to the Color attribute of each area light as indicated in the images below:
- Test render the scene. You should get something like the image below. If the reflections appear too bright, remember that you can lower the exposure settings in the Arnold attributes for the render camera.
The high dynamic range of the HDR maps are visible when the lowering Arnold's camera exposure attribute
The light HDR map details are visible when lowering the camera exposure. You can see the full high dynamic range visible within the specular reflections in the scene:
? Exposure 0 Exposure -2 Exposure -4?
Alternatively, you can experiment with changing the lights intensity or changing the HSV attributes of the HDR maps to get the effect you want.
If you find that the lighting appears a little dark at the front of your object in the studio you could also try adding a reflector plane in front of the camera (turn off 'Primary Visibilty' for the plane).
Light's file texture 'Color Gain' and 'Exposure' attributes can be modified
Once you have completed this tutorial, why not have a go at converting the scene into a HDR map using the Spherical camera lens.
Scene rendered with Spherical camera lens
More information about the spherical camera can be found here.
Further examples using this studio lighting setup