Sunday, 21 October 2007

With a little help from the Sekonic L-758DR



This image was created with a heap of help from my light meter. Without it I would not have had full control over the Contre-Jour effect I was seeking. I needed to expose the background by one stop over my working f stop of f/10 to take the background to 255/255/255, pure white. But I also wanted to get a little bit of wrap around effect through the diffuse material out back. I ended up with f/22 on the background which gave me a high key effect plus a bit of wrap around light around the subjects face, body and limbs. The background ended up being 2 stops over the working f stop of f/10.

The beauty about the gear (light meter) I used for this shoot is that I had total control over the process.

I will be going through the process of how I used the incident metering option in my next post.

2 comments:

Bret Lucas said...

This image brings to mind all sorts of potential problems that don't involve Photoshop or Lightroom.

The one that's most obvious to me is dealing with reflections in glasses or another way of putting it is, dealing with the "family of angles". How do you control specular reflection in highly reflective surfaces such as glasses?

First you need to understand the "family of angles". If you have a light source close(ish) to the camera you may get a specular reflection of the light source on the image.

Easy fix. Either move the angle of the reflecting surface or move your light source away from the camera.

In this case I firstly raised the fill light to almost ceiling height (7ft)... but the glasses were still "seeing" the light source from the perspective of the camera so I asked the subject to lower her jaw. Done! No specular reflection other than on the rims of the glasses, which is a good thing as it gives the viewer texture information.

Bret Lucas said...

One more thing. The greater the convex form of the reflective surface, the more that form sees. You will notice that we still see specular reflections on the rims of the glasses. Why? Because the rims are cylindrical in form and will pick up a light source from almost anywhere in the room and reflect it back to the camera.