9: Photography

Question 1

width of opening that admits light into a camera - narrow is used for bright light, wide is used for lower light

Answer 1

aperture

Question 2

forerunner of modern camera - a dark room (or box) with a small hole in one side, through which an inverted image of the view outside is projected onto the opposite wall/screen/mirror, then traced

Answer 2

camera obscura

Question 3

a photograph taken by an early photographic process in the 1830s - treated metal plate exposed to light and the chemical reactions on the plate created first satisfactory photographic images

Answer 3

daguerreotype

Question 4

depth of the area before the camera that will be in sharp focus in a photo

Answer 4

depth of field

Question 5

ratio of the focal length to the size of the aperture - low gives a shallower depth of field, high brings near and far opens into focus

Answer 5

f-stop

Question 6

distance between the lens and the image sensor

Answer 6

focal length

Question 7

surface inside a camera where the image is collected, upside down - film in traditional camera, electric charge in digital cameras

Answer 7

image sensor

Question 8

length of time the camera shutter is open - determines brightness of the resulting photo

Answer 8

shutter speed