Quiz 1 intro to dark room

SLR & D-SLR

Point and Shoot (compact cameras)

Rangefinder

View Camera

mirrorless camera

Twin Lens Reflex (TLR)

Parallax Error

The viewfinder is in a different position from the Lens. You do not see what the lens sees.

Composing a scene

The eyepiece (Viewfinder) on the back of a camera allows you to preview an image before you make a photograph

Shutter Control

This adjustment determines the amount of time light will strike the film. (AKA Shutter Speed) MEASURED TIME OF AN IMAGE

-Short(fast) shutter speeds stop motion; long(slow) shutter speeds show movement and blur

-fast=smaller number

-slow=bigger number

Aperture Control

This adjustment determines the amount (quantity) of light entering the camera that passes through the shutter and strikes the film OR sensor. (AKA Aperture Or F-stop)

-size of the whole that lets light in the camera

-SMALLER THE NUMBER THE LARGER THE HOLE=narrow area of focus

-LARGER THE NUMBER THE SMALLER THE HOLE=larger area of focus

Exposure = Shutter Speed x Aperture

or Exposure = Time x Intensity

Exposure = Intensity x Time

•Intensity: Amount of Light striking film

–Controlled by Aperture

•Time: Duration light strikes film

–Controlled by Shutter Speed

APERTURE =

f (focal length of lens)/ d (diameter of the aperture diagram)

Depth of field

• size of lens aperture

• focal length of lens

• distance of focus from the subject

shutter speed and aperture do this

Shutter speed affects the sharpness of moving objects

•Aperture affects depth of field (acceptable sharpness from near to far in an image)

The Lens

is to capture light, which moves in waves and rays, and direct it toward the field and sensor

Modern Lens

Aberration

An optical defect in lenses causing an image that is not sharp or distorted.

Focal Length

Lenses are generally described by focal length

•which is defined as: the distance between the lens’s rear

Depth of field is controlled by three things

•Distance from subject

•Focal Length of Lens

•Aperture

Exposure =

Exposure = Intensity x Time

Film Speed

referred to as ISO (International Organization for Standardization) or EI (Exposure Index)

-chosen light sensativity

-lower= high lights and shadows

-higher=low lights and darker

Light Meter

Read REFLECTED light only Handheld Meters

•Can read REFLECTED or INCIDENT

–Reflected: light bouncing off subject

–Incident: light falling ON a subject

Exposure is based on reciprocal relationship

an increase in one, is a decrease in the other

Bracketing

Make a series of photographs of the same scene exposed differently; one variable (either aperture or shutter speed) must remain the same