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Film and filters

Film and filters. The structure of the negative. Antihalation backing (dissolved away during development). Top Coat (dissolved away during development). Support. Emulsion. Subbing. Light waves. Infrared film was popular in the ‘70s, but is not commonly used anymore. .

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Film and filters

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  1. Film and filters

  2. The structure of the negative Antihalation backing (dissolved away during development) Top Coat (dissolved away during development) Support Emulsion Subbing

  3. Light waves Infrared film was popular in the ‘70s, but is not commonly used anymore. The film we use, Kodak Tri-X, is sensitive to visible and UV light.

  4. Color Sensitivity: Blue-sensitive film Blue + UV

  5. Color Sensitivity: Orthochromatic All colors but red

  6. Color Sensitivity: Panchromatic All colors

  7. Film Speed (ISO) • lower numbers = slower films = need more light = longer exposureshigher numbers = faster films = need less light = shorter exposures http://www.photonhead.com/beginners/filmspeed.php

  8. Film Latitude • “The amount of deviation from the correct exposure that will still produce decent pictures.” -Photography in Focus • Generally, you have better latitude with over exposure than underexposure

  9. Resolving Power • The ability of the film to record fine detail. • Incorrect exposure can alter resolving power. All the more reason to have correctly exposed film!

  10. Filters • What kinds of filters can we use for black and white film?

  11. Types of filters • Correction: changes the tonal response of the film so that all colors are photographed at about the same as the eye originally saw • Contrast: either increases or decreases the contrast between colors • Haze: reduces atmospheric haze caused by dust and water vapor • Polarizing: stops the path of polarized light; useful for water, glass, or other reflective surfaces

  12. Correction Filters No. 8 Yellow Filter

  13. Contrast Filters • Include color filters that manipulate the contrast between certain colors (translates into gray tonal ranges in black and white) http://www.ehow.com/video_5116416_effect-filters-black-white-photography.html

  14. Haze Filters Use haze filters for distant landscapes or high altitudes

  15. Polarizing Filters • http://www.ehow.com/video_4756343_what-polarized-light.html • http://www.ehow.com/video_5238817_use-circular-polarizer.html

  16. Polarizing and Red Filters

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