Test renders

Shadows - Unchecked
Shadow type - Soft
Shadow resolution - 3
Number of samples - 10
 standard Spot - ON
Ginza - 3
LightWorks - Raytrace Full		 Shadows - Checked
Shadow type - Hard
Shadow resolution - 0
Number of samples - 10
 		standard Spot - ON
Ginza - 3
LightWorks - Raytrace Full
Render Test 1
 Render Test 2
Just  a basic default luminace setting. Even though there is a standard Spot light turned on, there's hardly any shadows.
Turning on the shadows in the luminance and changing the type and resolution makes a big difference. Though ON, the standard Spot appears to do nothing; very dark in the middle.

Shadows - Checked
Shadow type - Hard
Shadow resolution - 0
Number of samples - 100
 		standard Spot - OFF
Ginza - 3
LightWorks - Raytrace Full
 		Shadows - Checked
Type - Hard
Resolution - 0
Number of Samples - 100
 		standard Spot - OFF
Ginza - 2
LightWorks - Raytrace Full
Render Test 3
 Render Test 4
Spot turned OFF and Samples increased to 100. Intensity left as is. Shadows smooth out in the interior somewhat.
 Intensity on Ginza environment turned down to 2. The gold  sphere doesn't look too bright anymore.

Shadows - Checked
Shadow type - Hard
Shadow resolution - 0
Number of samples - 500
 		standard Spot - OFF
Ginza - 2
Radiosity Raytrace Full

Render Test 5


Samples increased to 500, switched to Radiosity RTF.