Current webmaster: Shamim Pakzad (shamimp@ce.berkeley.edu).
CS 39J: The Art and Science of Photography is a freshman seminar taught
by Professor Brian A.
Barsky.
Site design by Steven Chan.
| CS 39J > Schedule & Notes > Session 2 Detailed Notes |
http://inst.eecs.berkeley.edu/~cs39j/fa04/session02.html
Notes from 10 September:
Attendance: Attendance is compulsory. Students involved in Inter-collegiate athletics must still attend class. This is a pass/no pass class. There will be no quizzes, but you need to be here and participate in the weekly class meetings and need to do the photo assignments. If you are going to miss class, you need to let Prof. Barsky know ahead of time.
Assignments: We will choose a topic every two weeks for you to photograph on this topic. This week’s assignment is to photograph near sunset, with various exposures, noting the different effects. Try underexposing a shot before it gets dark, so you can still get the night feeling, but still capture some of the detail in objects that would otherwise come out black.
Crits: We will hold class “crits” or critiques on each others’ work. These will be constructive evaluations of your peers’ photography.
Participation: If you have suggestions, feel free to voice them. This class is a seminar, which is meant to encourage dialogue between professor and students and promote classroom discussion – so speak up! If there is some topic in which you are interested, don’t hesitate to let Professor Barsky know!
Photo Topics Discussed:
1) Previsualization: A term for imagining how a photograph will turn out before you take the picture.
2) Zone System: Ansel Adams developed this system to address the problem of
photographing scenes having disparities in light. Certain areas of a
photograph will have more light than others. The Zone System helps correctly
expose all areas of a photograph.
3) H&D Curve: This refers to film’s response to light. If response were linear, then exposing twice as long would provide the same exposure as doubling the size of the aperture; however, response is not always linear. The longer the exposure , the more that light affects the film; however, for longer exposures, the film is less sensitive (referred to as "reciprocity failure"). At very short and very long exposures, slight variations in exposure will not have as dramatic an effect as for shutter speeds within the more linear part of the H&D Curve. This is particularly relevant for night photography. The name of this curve refers to erdinand Hurter and Vero C. Driffield who developed the idea in 1890.
Next Week: Next week we will talk about slide film. Try to use it for your
project if you feel comfortable with it.
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