CS 39J > Schedule & Notes > Session 6 Detailed Notes |
http://inst.eecs.berkeley.edu/~cs39j/session06.html
25 February 2005
- Recriprocity Failure: It appears that there is a linear relationship between the brightness of a picture and the shutter speed or exposure. However, this is true only within a certain range. For example, if you were to take a picture for 2 seconds and wished the image to be twice as bright, you would have to make the shutter speed longer than 4 seconds. This is called "recriprocity failure".
- In film, long shutter speeds effects the colors, as different colors expose at different rates.
- To eradicate shadows in a harsh environment, consider using a fill-in flash. Unlike the harsh quality the flash gives pictures taken in the dark, it will simply lit the aspects of the photograph that are not already lit.
CRITIQUES:
- Bianca:
- Moe: manipulation of focus and lighting draws attention to the subject (highlights on nose and dog's head).
- Flower/Campanile: good composition because it shows the flower in context tower may be too obscured--unidentifiable moving slightly will keep campanile centered while shifting the position of the flower--through parallax great light.
- Max:
- Got the Blues: rich + vivid exposure.
- Lily:
- Ikea People: monotone makes information difficult to read--what is the composition?
- Candleholders: repetition of ellipses works well. Great exposure for the texture on left candleholder.
- Adrienne:
- Kroeber stairs: great composition plus for catching people in motion, but there is not enough blur--almost looks like it could be a mistake. More blur would make it look more deliberate.
- lily pond: professor barsky really liked this one great composition--lily pads lead the eye all around the composition.
- Hai:
- gundam models: head should be at an absolute vertical--it's currently at a slightly off angle. .
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