Silver-halide “AgX” AgIsilver iodide AgBrsilver bromide AgClsilver chloride

AgX ‘emulsion’ gelatin binder AgX crystals

Monochrome Negative Materials Support base silver halide layer

Latent Image Formation h

h Ag atom clusters 0

Exposure Support base silver halide layer Original

Photographic Development selective development; reduce exposed AgX  Ag°

Support base Photographic Development Support base Exposure Ag + + hν  Ag 0 Selective Development Ag + + DA -  Ag 0 exp

Photographic Development Support base Development Ag + + DA -  Ag 0 Fixer dissolves Ag +

Photographic Development - negative Exposure Development Fixer

Photographic Development – ‘print’ Exposure Development Fixer

Support base Color Coupler Development ( e.g., Yellow) Support base Exposure Color Coupler Development Ag + + DA -  Ag 0 + DA 0 DA 0 + CC  Color Dye cc

Support base Bleach Fixer Color Coupler Development Color Coupler Development Ag + + DA -  Ag 0 + DA 0 DA 0 + CC  Color Dye

“Panchromatic” Negative Materials wavelength, nm relative sensitivity Spectral sensitivity of AgX film with spectral sensitizers

Color Negative Materials wavelength, nm relative sensitivity Blue (B) “Green” (G + B) “Red” (R + B) Three monochrome layers with different spectral sensitivities

Color Negative Materials Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: BLUE Exposure

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: BLUE Development

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: BLUE Bleach

Color Negative: BLUE Fix Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Color Negative Materials Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Color Negative: GREEN Exposure Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: GREEN Exposure

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: GREEN Development

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: GREEN Bleach

Color Negative: GREEN Fix Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Color Negative: Red Exposure Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: Red Exposure

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: Red Development

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: Red Bleach

Color Negative: Red Fix Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Color Negative: RGB Exposure Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: RGB Exposure

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: RGB Development

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Negative: RGB Bleach

Color Negative: RGB Fix Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Color Print: YMC Exposure Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Print: YMC Exposure

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Print: YMC Development

Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer Color Print: YMC Bleach

Color Print: YMC Fix Support base red (& blue) sensitive layer green (& blue) sensitive layer blue sensitive layer yellow filter layer