Light

15th November: During this mornings session we were talking about light and where everything is on the light spectrum including the gamma and infrared rays. Light is a natural agent which makes things visible to the human eye. This visible light includes all the colours that the human eye can see (re, orange, yellow, green, blue, indigo, violet). It is the electromagnetic radiation within this spectrum which is made up of different wavelengths from 400-700 nanometers. These fall between infrared (short wavelengths) and ultraviolet (long wavelengths). The word ‘photography’ comes from ‘photo’ or ‘light’ or ‘writing’ ultimately meaning ‘light writing’.

When we look at an object we are seeing a reflection; this light which isn’t absorbed by the object is then reflected which is why we can see the object with our eyes. Sunlight, being a form of light, contains all the colours of visible light and when it illuminates an object we see certain colours which light has been reflected which then travels to our eyes. So when we take a photo, that photo is created by capturing the reflected light of what it is focused on and then travels to the lens and is captured by the sensor in the camera.

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In the afternoon we were in our pairs from the day before, we were asked to join another pair and then each group got given an Elinchrom Quadra ELB 400 kit to shoot with for the rest of the day. We started off by using it just in the studio, shooting bright objects that we had in our bags so that these would stand out in the shots.

We were also playing around with the white balance setting on our cameras changing it to flash or tungsten. Using the tungsten white balance setting changed the lighting in the photo to a blue tone however, changing the white balance setting to flash changed the lighting to an orange tone in the photos. We were also playing around with blue and orange gels which we held over the lights so that they changed the colour of them in the photo. Using both these settings worked quite effectively when taking our photos as they changed the whole contrast of the photo completely.

  • The two blue toned photos were shot on a tungsten white balance setting
  • The two orange toned photos were shot on a flash whit balance setting
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