This is a material that is used to cover a photographer's head along with the camera. The cloth blocks out any light so you can get a better view of the subject on the camera's viewing screen.
Daylight Film
This is color film that is designed to give you the correct color balance when the film is exposed to normal daylight conditions.
Depth of Field
This term refers to the range of distance in an image that is in focus and will be in focus on the actual photo. You can control the depth of field with the camera's lens aperture.
Developer
Developer is a chemical solution that is used in the darkroom for developing film and photographic paper. It basically transforms a film's or paper's latent image into a visible image.
Diffusing
This means to soften light by reflecting it off of a material that scatters light, or by placing a translucent material between the source of light and the object. Diffusers are often used to achieve this effect.
Direct Positive
This means getting a positive image directly from another positive image without using a negative.
Diopter
This is a unit of measurement that helps you determine how much you need to alter a lens to bend or refract light rays to get the proper focus.
Double Exposure
This means to expose the same film frame twice. Most double exposures will show the same object twice in the same photo image.
Emulsion
This is a light sensitive material that is used to coat the surface of film and photo paper. Emulsion is made of one or more of the silver halides suspended in gelatin. The actual image is formed in the film's or paper's emulsion.
Exposure
This word can mean a few things. Exposure occurs when light strikes a film. Exposure is also the total amount of light that is hitting the film or other photographic material. Exposure can also mean the combination of the camera's shutter speed and aperture when used to expose the film in the camera. An example of this would be 1/50 of a second shutter speed at ?/11 aperture. These speed and aperture combinations often called exposure settings. Once the settings are correct you should achieve proper exposure for your photograph.
