A developer used once and then discarded.
Describes 1.) any substance or surface that will not allow light
to pass; 2.) a paint used to block out portions of a negative so
that they will not allow light to pass during printing.
up: To increase the size
of a lens aperture. Opposite: stop down.
Film that is sensitive to blue and green but not to red wavelengths
of the visible spectrum. Abbreviated ortho.
To give more than the normal amount of development.
To give more than normal exposure to film or paper. The resulting
silver density is often too great for best results.
Loss of chemical activity due to contact with oxygen in the air.