Exercise: Tungsten and fluorescent lighting.

Compose a photograph in which both the interior lit by tungsten lamps and the exterior at dusk are both visible. Wait until the light levels inside and outside are approximately equal and take three photos: one set to Auto, one with the balance set to daylight and the other with the balance set to tungsten.

For the second part of the project find two different interiors lit by fluorescent lamps. If possible make one of these an interior lit by small CFL lamps. Take two or three photos identically composed in each location. The first set to Auto the second fluorescent and the third to an alternative fluorescent if possible.

Before I took any photographs I followed the instructions for looking at the different colour temperatures of the daylight and the room (tungsten) light. The light outside appears to have more of a blueish tone where as the indoor light seems quite yellow.

Part 1.

1/25 f3.5 18mm WB AUTO.

1/25 F3.5 18mm WB daylight.

1/25 f3.5 18mm WB tungsten.

I actually think that the Auto white balance has done a good job here and shows the room looking as close in colour to how I remember. The daylight WB seems to show the room looking too warm and yellow in colour where as the tungsten WB gives it too much of a blue tone. Looking at the outside through he window the daylight WB  makes it look more realistic as both the other options make it look very blue. I think that it is more acceptable for the outside to appear blue at dusk than then indoors to look unrealistic in colour.

Part 2.

1/80 f5 ISO 200 52mm WB AUTO

1/80 f5 ISO 200 52mm WB fluorescent

1/80 f5 ISO 200 38mm WB AUTO

1/80 f5 ISO 200 38mm WB fluorescent

The only fluorescent lighting available to me is at work so I took my camera there to experiment. Ideally I would of liked the background to of been pale but its quite a pale blue. The examples shot with the auto WB produce images closer to the real colours. The fluorescent WB makes the background considerably more blue and is not at all an accurate representation of the true colour showing that fluorescent lamps do not emit a full colour spectrum.