Sunday 12 December 2010

Artificial Light Testing

Types of Artificial Lighting
When we get to the stage where we are ready to film our music video, we must take into consideration the natural lighting of the day and also any weather conditions which would affect our filming. This means knowing what the correct lighting facilities we will require are and more importantly, having access to them on the day of filming.  
We decided to test out a few different lights and filters so we could understand and see for ourselves what effects them each created. We have discussed possible location settings for our music video and there is a strong chance we will be filming, at sections of the video outside. Taking into consideration the time of year we are likely to be filming in, November - January time, the risk of having bad weather is quite high.

LED Strip Light
The LED lighting was effective when being used indoors and outdoors and although being a  yellow light, it didn't give off a golden tint, therefore resulting in a 'cleaner' light that would make our scene of a better visual quality. However the downfall to this lighting is due to it being powered by mains, we would have consider extension cables because if we film some footage outside the light may not reach the area where it's needed.

Mains Powered Yellow Light
When testing this type of light we discovered it gave off a fairly strong yellow tint to objects which would not look natural and is not what we were looking for. However it did have a good range of lighting outside spreading over quite a distance, on the other hand, it is powered by mains which, yet again, presents us with the same possible problem as with the LED light strip. 


Car Light
Lastly, we tested the effect of car lighting, which proved to be good in brightening up the scene and giving a strong lighting over a long distance which would be good for filming outside, however a car is inappropriate for positioning it would be very time consuming to keep manoeuvring the car around. However it is an option unlike the other two lightings that it is not powered by the mains and therefore we could use it for a long period of time. There is also different strengths of light we could use from car lights which gives us choices and range to work with.

Filters
In low vision rehabilitation, various light filters have been employed to improve visual function, we tested the filters to see the effects of reflection they produced.
The white filter wasn't greatly effective in reflecting the light, it created a very dim reflection not really lighting up objects. These sort of filters are rarely used it would only be effective if we were 
filming in a dark setting not outdoors which we will be aiming to do.



The gold and silver reflector films proved to be a lot more effective, the metallic colour of the films enabled the light to be directed more to a specific object but also conveyed a stronger light. The gold film seamed to be more effective indoors as the gold glow effect it radiates is more visible to the eye under lower levels of external light.




Home Made Reflector
We quickly realized that although light reflectors were very effective when used, manufactured products were expensive and meant our budget would be severely damaged and limit other aspects of production. To proceed with the equipment we needed, we created our own reflectors using little more than cardboard and tin foil. We stretched the tin foil smoothly over the cardboard to maximize the reflective quality produced. It turned out that our home made reflectors were far better than the manufactured products as we could make them as large as we needed, and make as many as we wanted. This linked with the fact that the reflectors we made, emitted a 'purer' lighting effect than the ones we purchased.



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