Grey Seamless, Shadows & the Overlay Blend Mode

When compositing images taken in the studio using grey seamless paper, it is often a simple matter of changing the new background's layer blend mode to Overlay to maintain the original shadows. Here is such an image of Tiffany Felisha:

Starting image of Tiffany with shadows created by the studio flashes.

Starting image of Tiffany with shadows created by the studio flashes.

If the grey seamless paper (including the shadows) is masked out in Photoshop, a layer of Tiffany only can be created, and the new background (in this case the Sports Hub in Singapore) can be inserted between these two layers of the model. Here the Sports Hub's layer blend mode is the default Normal:

An image of Singapore's Sports Hub has been inserted between the two layers of Tiffany.

An image of Singapore's Sports Hub has been inserted between the two layers of Tiffany.

To retrieve those studio shadows, simply change the layer blend mode of the Sports Hub layer to Overlay:

Tiffany's shadows have returned.

Tiffany's shadows have returned.

A Curves adjustment layer was used to darken the background and thereby give a little more "pop" to Tiffany:

Final image of Tiffany.

Final image of Tiffany.