Recap #2

Same thing again here, we get given a whole lot of information in a short space of time, so to avoid it evaporating into thin air I'm going to recap on some interesting topics I've learnt in the past few weeks.

Colour and lighting

I learnt that our first understanding of light and colour began with Issac Newton, he experimented with refracted light on a prism, this created components of colour including: red, blue, orange, yellow, green and violet. From his experiments he produced a colour wheel, which has been studied and developed upon by more recent scientist to the present day.

They eye perceives colour as:

• Reflected Light
• Transmitted Light
• A mixture of both

From this I understand what we perceive as colour is a objects absorption of a part of the colour spectrum and then either reflected/transmitted or a mixture back to your eye. It's represented by vibrations, different electromagnetic spectrum vibration change the colour the eye perceives.

We were aslo told about addictive colour, when red, blue and greens are projected over each other, the part where they over lap creates a secondary colours. Computer screens work with addictive colours, if you put a magnifying glass close to your screen you would see thin lines of red, blue and green, this in effect is what creates all the varieties of colour you see on your screen.

There are several colour schemes:

Harmonising colours, colours that sit next to each other on the colour wheel often work well with each other, they work of each other. Good to take into account when designing.

Complementary colours, colours that are separated by the colour wheel, when both are used together they tend to create a undesirable effect.

Clashing Colours, colours opposite each other in the colour wheel, unlike complementary colours these colours used together can work well if done right, creating good contrasts, for example black on white.

Hue = The hue is a distinction between red blue and green, this is often presented by the dominant wavelength of an object
Saturation = The purity of a a colour a value of 100 is 100% pure where as a value of 5 is 5% pure, adding more white pigments to a colour reduced the saturation
Brightness = the more black pigments added to colour the lower the brightness.
I Also learnt about lighting in terms of film, where different lights can add different moods and quality to a shot.

Coherence - Light quality

Hard light - Brings up detail, Gives crisp edges, Casts shadows, Gives a focused light source, Is directional

Soft light - Brings up detail, Gives crisp edges, Casts shadows, Is omnidirectional

Tungsten and Daylight -Colour correction and other gels Gels are used to balance light sources Because video does not cope well with mixed colour temperatures
Tungsten – 3200k - reddish
Daylight – 5600k - bluish

I also did a lighting exercise to experiment with different techniques, we used a 3 point lighting system to try and recreate day light in doors with daylight gels. The back and key are hard light, the fill light is soft to fill shadows.

Hexadecimal - A number system with base 16, using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E and F, useful in computing as numbers in hexadecimal can be stored in four bits. Informal short form used in computing: hex; Of a number, expressed in hexadecimal - It can be used to express colours/

HTML - HTML, which stands for HyperText Markup Language, is the predominant markup language for web pages. It provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists etc as well as for links, quotes, and other items