The lighting angle

The following images are the results of experimenting with using a single diffusing light from different directions.

P379: f5.6 @1/10   ISO 100 30mm

P379 was lit from the side with the light at the same height of the object.

P380: f5.6 @ 1/8  ISO 100  30mm - lit from the front

P381: f5.6 @ 1/6  ISO 100  30mm

The diffused light here was placed behind the object on the left at 45 degrees.

P382: f5.6 @ 1/20  ISO 100   30mm

In P382 the lighting was placed directly behind aimed at the subject

P383: f5.6 @ 1/10  ISO 100  30mm - lit from the right side

For the following images the diffused light was raised so that it pointed down at an angle of 45 degrees.

P384:  f5.6 @ 1/8  ISO 100   30mm - lit from the right  side

P385: f5.6 @  1/13  ISO 100  30mm

P385 was lit from the front with light next to the camera just to the right.

P386 : f5.6 @ 1/6  ISO 100   30mm

In  P386, the light was placed ahead of the camera to the side at a 45 degree angle to the object.The last three images were taken with the diffused light suspended overhead pointing down.

P387: f5.6  @ 1/20  ISO 100  30mm - lit overhead but behind

P388:  f5.6  @ 1/10  ISO 100  30mm

P388 is lit overhead from slightly in front of the camera.

P389: f5.6 @ 1/4  ISO  30mm - lit overhead 

 Looking at the last three images, P388 seems to give the best 3-dimensional effect. And looking back at all of the images taken, I think that I prefer P386  as the lighting gives a good sense of the form of the object, the material and colour...a more atmospheric image.