Digital Cameras

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Digital Cameras

• An Introduction to Digital Cameras and the Basic
  Parts of a Canon A85

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One of the 1st Digital Cameras

• This was a digital back created for a popular
  Nikon Film camera. In 1994, the camera cost about
  12,000! It was a 1.5mp (1524x1012 pixels)

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Kodak DCS 620

• One of the first 2mp cameras. 10,495

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Kodak DCS 760

• One of the first 6mp cameras. July 200025,000.
  By July 2001, street price dropped to 8,000 to
  compete with Nikons own camera, a D1, and a
  Canon model, the D30.

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Canon A85

• Many Canon models are very similar to you class
  camera. Other manufactures will also be similar.

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Not all Camera CCDs are created Equal
A85 APC Sensor
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Exposure Mode Controls

• Auto (point shoot)
• Program
• Shutter priority
• Aperture priority
• Manual setting

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Auto Mode When you want to take snapshots
without worrying about the mechanics of
photography, put the camera on Auto. This mode
sets all exposure levels automatically, and it
usually locks you out of making any minor
adjustments manually. This is for general picture
taking.
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SCN Exposure and White Balance is selected to
match the picture you are taking.
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Flash Modes

• You will not have control over the flash in all
  modes on your camera.
• In Auto, the camera usually will only allow AUTO
  FLASH (the camera decides when to flash) or FLASH
  OFF (no flash at all).
• One of the best flash modes is FLASH ONwhich
  will allow your camera to flash even if it
  doesnt think it needs it. If you subject is
  close, it will fill in shadows, etc.

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Resolution Setting

• Resolution and Compression determine the total
  image quality.
• Some cameras may not allow you to change the
  compression.
• Always shoot at the highest resolutionyou can
  always make it smaller.

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Resolution and Compression
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Memory Cards Each camera comes with a memory
card or built-in memory. You can buy larger
memory cards to hold more pictures.
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Memory Cards

• We use Compact Flashand a card reader to
  transfer images.

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Video
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LCD screen displays
Record menu
Play menu
Setup menu
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Record Menu Items
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Canon G1is first digital to offer ISO 50
ISO Selection
Ability to vary film speed for lighting
conditions
ISO 50
ISO 400
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Understanding ISO

• Just because your camera CAN shoot at HIGH ISO,
  doesnt mean you should.
• Generally, try to stay one stop lower than the
  maximum ISO. Example If your cameras max ISO is
  800dont go above 400.
• Dont use Auto ISO.

Nikon D200 ISO 1600
Nikon D300 ISO 1600
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EXTREME High ISO
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Nikon D3 was first to offer the insanely high
ISO 25,000
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Battery Types
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Battery Life
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Battery Life
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Battery Chargers
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Battery Charging
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Picture elements (Pixels)

• Long history of use in image creation
• Mosaics in ancient architecture
• Pointillism art
• Textiles
• Printing half tone pictures
• Electronic picture elements (pixels)

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6th Century Italian Mosaics
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The Pointillist Artist
19th C. French Neo-impressionist painting

• Image consists of small dots of paint
• Dots (pixels) made with point of brush as small
  as 1/16 inch
• Dots are unequal in size

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Other Pointillist works
Jean Volet
Georges Surrat
M. Rysselberghe
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Textile example hand made stitchery
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Image Printing Screen

• Photo screen can be course or fine
• Need black ink for single color
• Dots not equal size
• Eye reads dots as continuous tone image

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Computer Picture Elements (Pixels)
36 blank pixels
36 colored pixels
2 pixel horiz line
Youve got the
JAGGIES!
2 pixel vert line
2 pixel diagonal
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Low Resolution Computer Graphics
Desktop icons are 32x32 Pixels, and are 1024 bytes
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Image resolution/quality

• Small resolution 640x480
• Fine compression
• Increases memory capacity

• Medium resolution 1078x760
• Fine compression
• Good quality for prints or Net

• Large resolution 2048x1576
• Fine compression
• Best quality for prints

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Image Resolution and File Size
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Exposure Bracketing

• Allows taking 3 shots at different exposures
• Bracket can be set in 1/3 stop increments
• Exposure range can be set to 2 to 2 stops

- .7 stop
Normal exposure
.7 stop
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White Balance

• WB corrects for different lighting conditions
• Controls on LCD from rear panel button

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White Balance
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Nearly Impossible ISO
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Zooming the image in LCD
Feature allows close examination of image at 2
levels of zoom to check image detailslike image
focus.
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Macro Mode

• This mode allows close-ups to 2.4 inches with
  normal lens at wide zoom
• Canon offers a macro lens attachment for closer
  macro images

Normal mode
Macro mode
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