Controlling light to achieve

 exposure is the quantity of light reaching a photographic film, as determined by shutter speed and lens aperture.

 With a light meter!  Light meters quantify light.

 The light meter takes into account the ISO of the film and reports back with a suggested Shutter Speed and Aperture setting.  Use the meter reading as a guideline  Make changes based on the subject and the desired effect.

 ISO  Shutter Speed  Lens Opening

 ISO is the speed of the film.  Film speed indicates the relative sensitivity to light.  We use ISO 400 black and white film

 Light meters see light and dark areas and average the brightness to give you the correct exposure.  Use a 18% Gray card held up in the area you want to photograph.  The light meter off the gray card will give you an accurate exposure reading.

 Control your image with proper use of camera settings  You can get different effects and a correct exposure by knowing your camera settings

 The camera sets shutter speed and aperture based on meter reading  This is a guideline to adjust from

 Shutter –Priority AE Mode  You set the shutter speed the camera selects the f- stop, or Aperture

 Lets in less light  Can freeze action  1/250 or faster

 Lets in more light  Show flowing movement  Caution image may be blurry!  1/60 of a second or less

 You select the F-Stop, the Aperture, the camera selects the Shutter Speed

 The bigger the number the smaller the Aperture.  The smaller the Aperture, the less light into the camera.  The smaller the Aperture, the greater the depth of field.

 You select the F-Stop, the Aperture, the camera selects the Shutter Speed  The Smaller the number the bigger the Aperture.  The bigger the Aperture, the more light into the camera.  The bigger the Aperture, less depth of field.

 Small aperture  Less light  Deep depth of field  Large aperture  More light  Shallow depth of field

 Small Aperture  less light  Deep depth of field

 Large Aperture  Lots of light  Shallow depth of field

 Get a suggested correct settings  Decide what effect you want for the image  Make adjustments to the exposure settings

 Freeze motion with fast shutter  Blur motion with slow shutter  Deep depth with a small aperture  Shallow depth with a large aperture