Exercise 4.13 - Concentrating light

The task implied experimenting with different spot lighting tools to show different ways of lighting small subject or some part of the subject.
Though for this exercise the wider angle lens would probably work better, I decided instead to use 90mm Tamron lens and experiment with different flash options.

For the first picture I used LED torch for spot lighting from the back and white balance set to sunny day. As there was no flash attached and longer shutter speed applied, I also had to use tripod.  

90mm; f/2.8; 2 sec, 

The second shot has been taken with built-in flash and camera set on automatic Macro setting. The use of the flash saved some shutter speed, but the shot itself looks flat.  

90mm; f/5.6; 1/125 sec; 

Then I put the flash Nikon SB-700 on the camera. The results are significantly different from the built-in flash. The tones of colours differ, the shot itself is not flat, and the white balance seems to be different. Also, the aperture has automatically adjusted from f/5.6 to f/8.0.

  

90mm; f/8.0; 1/125

As I was not happy with white balance I saw on the previous picture, I have put the incandescent light filter on the flash and changed white balance setting as well. This has not changed the exposure values, but the colours of the subject and background look different.

90mm; f/8.0; 1/125 sec

For the final part of the experiment I have fixed a tube around the flash (with filter on) in order to concentrate the light of the flash more on the subject itself and put background in shadow. And it is seen that the bottom part of the shot fell into the shadow.

90mm; f/8.0; 1/125 sec

The task is showing that there are different ways of concentrating the light, and using flash is one of the options.