Creative Photography Module 1 Vocab
Terms in this set (24)
light-tight box that contains a light-sensitive material or device and a way of letting in a desired amount of light at particular times to create an image on the light-sensitive material.
a curved piece of glass through which light rays are refracted to either converge or diverge, forming an image.
converging or convex lens
will bend the light toward the center of the lens because one or both sides of the glass curve out. It also takes the various rays of light and bends them toward the same point to form an image.
is the distance between the lens and the subject
are those that magnify an image or make an object seem closer than it really is.
shrinks the object in front of it with a shorter focal length.
opens and closes between the film and the lens, giving the photographer control of letting light in.
the length of time that light is let into the camera in order to expose the film.
the lens opening that allows us to control the amount of light that reaches the film or digital sensor.
a set of overlapping metal plates that expand out to allow more light or fold in on each other to reduce the amount of light.
the size of the grain.
Digital cameras have sensitivity settings, the equivalent of film speed.
a five-sided mirror.
light-tight boxes that have a small hole. Light passes through this hole and creates an inverted image on the opposite side of the box. Pinhole cameras do not use a lens and have a very small aperture.
Point and shoot camera
uses an optical viewfinder instead of a semiautomatic mirror.
SLR, or single lens reflex, camera
a semiautomatic movement of the mirror, which produces an exact image in the viewfinder. SLR cameras exist in both digital and traditional film forms. Since the 1970s, most professionals use SLR cameras. A dSLR is a digital version of the traditional SLR camera.
use an electronic image sensor to digitally record an image.
the smallest unit of the picture that can be controlled.
the predominant default file format in many digital cameras because the file format compresses the image. The drawback of JPEGs is that compression causes the loss of some data.
lossless file format keeps all the information in the picture because it is a larger file size. TIFF files can be compressed but the size difference isn't significant.
A file format that saves the actual data, which are not processed by the camera. RAW files can be compressed without losing information. The advantage of RAW files is that because they retain all of the information, some aspects such as white balance can be more easily changed in editing than with other files.
the image quality is the same as the image is magnified.
crops the image and enlarges the cropped image to fill the frame of the camera which can result in a loss of quality.
an adjustment that can be made to the color so that whites will appear white in the photograph instead of yellow or blue.