Week 2

Week 2 - Week 2 M&P Density What is density? - The...

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Density What is density? - The degree of optical opacity of a medium or material, such as a photographic negative. - How much light stopping ability our negative has - How dark out print is. Densitometry - Ability to measure the light stopping ability of a negative or the light reflecting ability of a print. - Why do we want this ability? o Can give us great insight into the photographic process. Light Striking a Negative - Can be absorbed, reflected back, or transmitted. (RAT) Density Measurements - Transmittance - Opacity - Density Transmittance - The ability of a media to pass light through it - Transmittance = transmitted light / incident light - As light stopping ability increases the transmittance value decreases - Can be reported as a decimal value or a percentage Opacity - The measure of “darkness” or “lightness” or the lack of transparency - Opacity = 1 / transmittance or Opacity = Incident light / transmitted light - Here as a sample increases in density the opacity increases
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This note was uploaded on 04/21/2008 for the course M&P 071 taught by Professor Salvaggio during the Fall '07 term at RIT.

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Week 2 - Week 2 M&P Density What is density? - The...

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