dodging and burning:dodging decreases the exposure for areas of the print that the photographer wishes to be lighter, while burning increases the exposure to areas of the print that should be darker.
safe light:Safelight is a light source suitable for use in a photographic darkroom. It provides illumination without the wavelengths of the light spectrum to which the material in use is sensitive.
single lens reflex:
A single-lens reflex (SLR) camera is a camera that typically uses a semi-automatic moving mirror system that permits the photographer to see exactly what will be captured by the film or digital imaging system (after a very small delay), as opposed to pre-SLR cameras where the view through the viewfinder could be significantly different from what was captured on film. (The Canon Pellix film camera was an exception wherein the mirror was a fixed beamsplitting pellicle.)
fixer:
Films and photo papers contain light-sensitive grains called silver halides. When you develop, the silver halide grains that were struck by light are chemically reduced to black metallic silver. The remaining silver halide grains have to be removed from the material or they'll get dark and ruin your picture. Fixer dissolves the silver halide grains and the water wash which follows removes them so your picture will be permanent.
Read more: http://wiki.answers.com/Q/What_is_fixer_for_in_photography#ixzz17czvAB2C
stop bath:Stop bath may contain an indicator, or a chemical which changes color as it is exposed to developer. Indicator stop will go from a bright yellow when mixed to a working solution from concentrate, to clear, then purple-blue when exhausted.
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