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Sketchbook Activity

Lecture & Vocabulary

Aperture: the opening of a lens, the size of which is controlled by a diaphragm. The term is commonly used to designate f-stops, such as f/4, f/5.6 etc., which are actually arrived at by dividing the focal length of the lens by the diameter of the aperture. Thus, f/11 on a 110mm focal length lens means the opening is 10mm. The wider the opening, the lower the f-number, the more light is let through the lens. Each step in aperture represents a halving or doubling of light. Thus, f/8 allows in half as much light as f/5.6, and twice as much light as f/11.

Shutter speed: an element of exposure; the duration of time in which light is allowed to strike the film.

 

Shutter: in a focal plane shutter, a set of curtains travels past the film gate and allows light to strike the film within a set period of time. A leaf shutter is located within the lens itself.

 

Speed: with a shutter, the duration of time in which light strikes the film. With film, the sensitivity to light. With a lens, the maximum aperture. All can be described as either fast, medium, or slow speed.

 

Shutter priority: an auto exposure mode where the shutter speed is user-selected and the exposure system chooses an appropriate aperture for correct exposure.

 

Iso: a prefix on film speed ratings that stands for international standards organization, the group that standardizes, among other things, the figures that define the relative speed of films.

Sign-Out Activity

ABOUT THE PROGRAM

Classroom Zoom Hours - 1PM to 1:30 PM - Monday - Thursday

https://zoom.us/j/96694415843?pwd=UTFlVWxaUmI1QmlyTzZzQjl4K1B1UT09

Meeting ID: 966 9441 5843 - Passcode: Viscom

 

Office Zoom Hours - 2PM to 2:30 PM - Monday - Thursday

https://zoom.us/j/97743088893?pwd=LzlQcnZZYTFRd3ZGSHliV1gzUkdCUT09

Meeting ID: 977 4308 8893 - Passcode: Viscom

ABOUT THE PROGRAM

Students must be prepared to make a major commitment. It is our assumption that students entering the program are here to lay a foundation for a career in a design field and will be required to meet rigorous and stringent standards. Strong communication skills, both verbal and written, are required as is the ability to read and analyze. Serious students will find that the program will provide them with an excellent opportunity to develop the skills necessary to succeed in the job market or advance in education. _Most of the students graduating from the program _continue their education.
 

CONTACT US:

Steve Bross

Commercial Art Instructor

sbross@cmths.org

610-277-2301x332

Central Montco Technical High School

821 Plymouth Road

Plymouth Meeting, PA 19462

www.cmths.org

610-277-2301

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