What is light?
Electromagnetic radiation
Point lights - the sun is the biggest point light, an uncovered light bulb
Linear parallel rays, such as a spotlight
How does light work?
Absorption
Black absorbs all colours, White reflects all colours as they are
Reflection
Diffused reflection, at the slightest angle the light will change dramatically and change it's reflection
Refraction - translucent/transparent
The further around the curve the light gets the more dramatic the refraction
Shadows made up of 3 things
Light intensity
Distance from source
Dynamic occlusion - Moving form a tight dark shadow into a blurred light shadow
Sub surface scattering - such as skin, leaves, ears and orange peels, some light is reflected off it but at the same time some is allowed to pass through.
Colour - green next to a red then the red will look more red because it is next to a green! And vice versa. Below is an image to further understand what I mean:
Stare at the dot then switch photos but continue staring at the photo. The black and White photo looks as though it has colour but after a few seconds your eyes adjust and you see the black and white, look below for link to example:
Here is an example of my own:
It does work but I did not pick the greatest of images to do this to, the larger the image and the more vibrant colours in it the better it works.
Frank Hong
http://www.3dtotal.com/tutorial/photoshop/digital_city_painting_city_of_angels/images/main_00.jpg
The image above has reflective light on the top and sides of the buildings, this is coming from the sun behind the angel building in the centre which is the pin light and one source of light. There is also absorption in the clouds and also more reflection of the water at the bottom of the image.
http://fc01.deviantart.net/fs31/i/2008/198/f/a/Concept_Package_Town_Square_by_frankhong.jpg
The above image is another good example of how light can push an image even further, there is pin light coming from the right hand side of the image which is coming from the sky again but the floor is reflecting the light. You can see light on the two windows on the left due to the refraction from the glass above and the same with the archway on the left. The top of the buildings are also reflecting the light.
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiakIPmoY2NVmbSvTVqdZvLVos1WbOxyDd5K2OlhXG5qV-rtItXYLqNHPXLAEKufUPr7jqCSKUHhYwX6OUCXoWyt6iw-eeRG1Blbezj4TpYY-67oFvJMT-SFG8KeKi4e8m1awFjc3DZTME/s1600-h/uncharted_waters_Post_Final_web720.jpg
The image above has pin light coming from the sky again which will be the sun beaming down and due to the shadow under the arches on the right you can tell that the sun must be behind them. The rocks on the right have some absorption where the sun is hitting them as do the clouds in the background, the waterfall at the back has reflection which is also hitting the water at the bottom. Because the water is quite still you can see that the water is clearer due to the sun hitting it and refracting through it. There is sub surface scattering with the plant life on the left hand side of the image.
Composition
Rule of Thirds
Take a canvas and divide into it into thirds horizontally and vertically and you will have nine squares in which the rule of thirds apply. Inside the squares is also the focal point, basically the best way I can describe it is to say that there should only be one focal point and if there are more then they should not take focus away from the one definitive focal point. Good composition allows the image to flow as one and make it successful.
As you can see in the above image there is clearly the Rule of Thirds composition working, the focal point is the bottom right with the blade edging out and the image itself works well alongside the composition.
I believe the above image works well in some ways but in others it fails, it is unclear as to wear the focal point is and the image therefore conflicts itself. I believe that the focal point is the boot that hits the bottom left corner. This works well in the sense that this is wear the human eye automatically first see's, this is due to us learning to read left to right. At the same time the fist at the top right is also another focal point, as well as the girl hitting the right focal point. Therefore I feel that this is a bad example of composition.
The above image uses The Radii method, a connection of lines meeting in the center and also coming from the center of an image or focal point. this automatically makes the view focus to the one point of interest.
There are more methods to do with composition such as The Cross, The Circle, The Triangle, The L and The Iconic. Every image whether it is from a phone book, famous painting, album cover, book cover or even concept art must fall into one of these theories or else it does not work. You can see examples of this in all of the above. Now that I have a better understanding of how composition works I will try to make sure that my concepts follow these theories. For more information about the theories behind Composition follow this link:
http://features.cgsociety.org/story_custom.php?story_id=3275&page=1