What a difference the space makes
In our previous episode I compared various modifiers used in a very dark environment which limited the light being able to bounce off of surroundings to fill in shadows and reduce contrast. Today I am comparing the same modifiers used in a small white space versus used in a small black space. The environment was controlled by building a cave made of foamcore v-flats in the studio. In one “cave” the walls, ceiling, and floor were black. In the other they were white. Too often photographers neglect to take into account the environment they are working in, especially when using studio strobes. We know that the strobes will overpower the ambient light, but the walls, floor, and ceiling will still have an effect on the outcome.
The effect is on the shadow density or the contrast in the image. We know that a larger light source, as seen by the subject, gives a softer light by stretching out the shadow edge transition and filling in the shadows. If the size of the light doesn’t change, the environment has an additional effect on the shadows without affecting the shadow edge transition. This gets confusing. As you will see, the photos made in the white surroundings could be described as softer, even though the shadow transitions are the same. Just as we shouldn’t confuse harshness with brightness, we shouldn’t confuse quality with contrast. We can have a small hard light that is diffused (spread wider) or more focused. We can have a large light that is more focused or spread out more. Diffused doesn’t equal soft. Diffusion spreads the light to cover a wider area. And in doing so it might bounce off of walls to lower contrast. And that might look softer, but in a dark environment we can see that this isn’t true. The size determines the quality (hard/soft) and the diffusion and environment control the contrast.
Let’s look at some of the comparisons.
OK, so much for light vs dark environments. What difference does diffusion make vs. undiffused in the same environment? Let’s take a look at the 60-inch Photek Softlighter with and without its diffusion panel in both environments.
I will leave it up to you to decide how much of an effect the diffusion panel has with the Softlighter. Tell me what you think in the comments below.