Describe how a diffusion enlarger works.
A diffusion enlarger scatters unfocused light over the negative. Black and white image contrast is lower. The effect of dust on the film is minimized.
In a certain simple diffusion system, light from an incandescent bulb passes through a sheet of cloudy glass onto the negative.
In a cold- light system (black and white only) the light source is a grid of neon tubes.