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The camera functions like your eye. 4 Basic Parts. PHOTO 1 INTRO Light tight Iris Eyeball Retina (rods and cones) Eyelids

SLR Camera – Single Lens Reflex Image appears in viewfinder as it will appear in the image you take Light Tight Camera Body – Like your eyeball. Only lets light in through purposeful openings (aperture and shutter). Any breech in the light tight body will let unnecessary light into the camera and possibly compromise your images (light streaks, overexposure). Digital Sensor (film) – The Digital Sensor or what was commonly known as “film” in film cameras captures the image that comes through the hole in the lens (aperture) when the shutter is opened. This sensor records the image, just as film did before the digital age. PHOTO 1 INTRO

Shutter Speed – Controls the amount of light that reaches the film/digital image sensor. Like a curtain opening and shutting. Allows you to show something in motion by showing the blur of the object in motion, or allows you to freeze motion as it happens. Measured in units of time (seconds or fractions of a second). Aperture – Lens opening or diaphragm that also controls the amount of light that reaches the film/digital image sensor. Constant light through a hole that can vary in size with adjustment. Also called f-stop. Affects depth of field (what is in focus and what is not). PHOTO 1 INTRO

What Aperture looks like… Basically, a larger aperture (lower f/number) will have your subject in focus, and everything in front of and behind it blurry. A smaller aperture will have your subject in focus and everything in front of and behind it quite focused as well.

PHOTO 1 INTRO What Shutter speed looks like… This number is actually a fraction, so if you see a shutter speed of 4000, it's actually 1/4000th of a second, while a value of 200 is 1/200th of a second.

PHOTO 1 INTRO What Shutter speed looks like…continued Summary: Fast shutter speed = freeze action. Slow shutter speed (w/ tripod) = silky flowing water.

PHOTO 1 INTRO ISO Speed ISO (International Standards Organization), is a rating that determines the sensor’s sensitivity to the light of the environment. ISO 100 = less digital noise.

PHOTO 1 INTRO Aperture and shutter speed and ISO are part of the exposure triangle. Any change in one of the elements of the exposure triangle, will have an impact on the way the remaining two elements react to expose the image. It is about balance!

PHOTO 1 INTRO This is not the last time you will hear about ISO, Shutter Speed and Aperture. We will be talking about and practicing the use of these settings for the rest of this semester. Do not feel overwhelmed or feel that you need to completely understand what each of these means or does. It will take practice!