Camera Mechanics pt.1
A ____blank_____ surface (film or a digital sensor) records the light that forms an image.
light sensitive
The size of the aperture setting also affects how much of the image will be sharp. This is known as the ______blank__________
depth of field
The shorter the _____blank______ of a lens, the more of a scene the lens takes in and the smaller it makes each object in the scene appear in the image.
focal length
______blank______ is the part of a scene that appears acceptably sharp in a photograph, and can be deep, with everything sharp from near to far, or shallow, with only the objects near in focus and everything else blurred.
Depth of field
Light sources, like light bulbs, emit light of a specific color balance or ______blank______—the mixture of wavelengths of different colors that it contains.
white balance
The _____blank________ adjusts from larger (letting more light pass from the lens to the light-sensitive surface) to smaller (letting less light pass).
aperture
Each full ______blank_______ setting of the aperture lets in half (or double) the amount of light as the next full setting.
f-stop
A lens of normal focal length (____blank____) produces an image that seems normal when compared with human vision.
50mm
A digital picture is made up of a large number of ______blank_______, each one a square with a single value and color, in a grid like a checkerboard or a piece of graph paper. If there are enough and they are small enough, your eye blends them together and the picture looks like a continuous tone photograph.
pixels
The quality of white light sources is also called its color temperature, and it is measured in degrees _____blank______ (K)
Kelvin
The ______blank_______ opens and closes to limit the length of time that light strikes the light-sensitive surface.
shutter
The _____blank_______ (in a digital camera) converts the light from the lens into electrical signals that are sent to the memory card.
sensor
A lens of long focal length seems to bring things _____blank______, just as a telescope does.
closer
_____blank______ is what we normally name the color of an object—a blue car, a green hat.
Hue
A ______blank______ is a graph that shows the brightness values (tones) of all the pixels in an image. The brightness levels in an image between black and white are divided into a discrete number, often 256, of different tones.
histogram
The _______blank________ (also called film speed, 100, 200, 400, and so on) describes a sensor’s (or film’s) sensitivity to light. The higher the number, the less light it needs for a correct exposure (one that is not too light or too dark).
ISO
The ______blank_______ shows the picture that the lens will focus on the sensor or film. It is the camera component that shows the photographer the area of the subject that will be included in a photograph.
viewfinder
As the focal length gets longer, less of the scene is shown (the angle of view narrows), and what is shown is _____blank______ (the magnification increases).
enlarged
_____blank_____ (sometimes called lightness or luminance) is a measure of the brightness or darkness of the color
Value
____blank____ built into cameras measure reflected light. The lightsensitive part of the is a photoelectric cell. When the system is turned on and the lens of the camera is pointed at a subject, the cell measures the light reflected from that subject.
Meters
The ______blank________ moves forward and back to bring objects at different distances into sharp focus, controlling the size of objects in a scene and how much of that scene is shown.
lens
To get a correctly ______blank______ picture, one that is not too light or too dark, you—or the camera—must set the shutter speed and the aperture according to the selected ISO sensitivity and how light or dark your subject is.
exposed
A ______blank_______ lens can seem to distort an image and produce strange perspective effects. Sometimes these effects are actually caused by the lens, as with a fisheye lens.
wide-angle
______blank_____ (or chroma) is a description of a color’s purity. You could have a tomato and a brick that are the same red hue (neither one more blue or yellow than the other). The difference is that a tomato is a more pure red than a brick.
Saturation
With _____blank______ exposure operation, you set either the aperture or the shutter speed and the camera adjusts the other to let in a given amount of light
automatic