Project 51 - Tungsten lights

This was the first project of section 6 'Artificial Light' and it looked at tungsten lighting.

As suggested, I found a room lit by tungsten bulbs (60 watt) and looked out of the window when the light outside was fading. On looking back into the room after a minute, the light in the room was clearly yellowish although it appeared to become less so after a couple of minutes. However, on quickly looking outside again, the lack of colour of the outside light contrasted with the light in the room to which my eyes had started to become accustomed - my eyes had thought that the room light was now almost colourless but the contrast with the outside light showed that this wasn't so.

Using my camera's meter, at ISO 100 and a wide aperture of f/3.5, the required shutter speed varied between 0.7 seconds in the middle of the room to 4 seconds in a 'dark' corner. This wouuld be too slow for a sharp hand-held shot, making a tripod essential in these conditions.