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If you’re using a shoot-through umbrella, you have to decide how soft you want the light to be that comes through that umbrella. Well, this is partially controlled by how far back you place the flash from the inside of the umbrella. I usually want really soft light for shooting things like brides, and portraits of families, etc., so I slide the umbrella out around two feet from the flash. That way, the light from the flash fills as much of the umbrella as possible, making my light source bigger, which makes my light softer (remember that from volume 2? The bigger the light source, the softer the light?). If you want sharper, edgier light, you know what to do—slide the umbrella in the adapter, so it’s much closer to the flash. Now the flash has much less room to spread, and your light will be smaller, more direct, and less soft.