Inside the Digital Camera

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Inside the Digital Camera
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Types of Digital Cameras
Pocket Camera
Rangefinder
SLR Like
DSLR
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Key Features of Digital Cameras (front view)
Rangefinder
Microphone
Flash
AF Assist Beam
Lens
Grip
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Top View
Shutter Button
Shutter Button
Zoom Lever
Speaker
Self-timer Burst Button
Off Button
Mode Lever
Self-timer Burst Button
Mode Dial
Flash/Mic Button
Flash Button
Mode Dial Power Button
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Back View
View Finder
Speaker
Zoom Lever
View Finder
Omni Selector
4 Way Control
LCD Screen
LCD Screen
OK Button
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Back View close-up
delete
I
menu
review
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Left Side
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Right Side
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Bottom Side
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Digital Camera
Digital cameras work in the same way that a film
camera works.
The difference between the two is what you find
inside.
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Digital Camera
How it works
Step 1. Point to the image to photograph and
take picture. Light passes into the lens of the
camera
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Lens Construction

• The quality of a lense is determined by the
  manufacture and the construction
• In the diagram at the right the lens has 6
  elements in 4 groups
• Another feature of any lens is its aperture, the
  size of the opening that allows light through

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Lens Construction

• The aperture of a lens is measured in f-stops
• The smaller the f-stop number the more light is
  admitted
• F-stop measurement is based on lens diameter and
  focal length

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Digital Camera
Step 2. Image is focused on a chip called a
charge-coupled device (CCD).
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• This is what a CCD looks like

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Digital Camera
Step 3. CCD generates an analog signal that
represents the image
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Digital Camera
Step 4. The Digital Signal Processor (DSP)
converted the analog information to digital
information, enhances it and prepares it for
output.
DSP
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Digital Camera
Step 6. The formatted digital image is stored
on miniature mobile storage media in the camera.
DSP
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Memory Card Types
Secure Data (SD)
Smart Media (SM)
xD Picture Card (xD)
MultiMedia (MM)
Compact Flash
Memory Stick (MS)
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Camera Resolution

• Factors that effect resolution
• Shutter speed
• Camera motion
• Subject motion
• Lighting/contrast
• Focus
• Optics
• Megapixels

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Digital Camera Specifications
Cannon S3 IS
Kodak C340
Image Capture Device
Approx. 6.0 Megapixels
Approx. 5.0 Megapixels
Still Format
Exif 2.2 (JPEG)
JPEG/EXIF v 2.21
Lens
6.0-72.0mm f/2.7-3.5 (35mm film equivalent
36-432mm)
f/2.74.6 (34102 mm, 35mm equivalent)
CCD
1/2.5 inch type Charge Coupled Device (CCD)
1/2.5 in. type (5.36 M total pixels)
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Digital Camera Specifications
Cannon S3 IS
Kodak C340
Zoom
12X Optical
3X optical
Shutter Speed
15-1/3200 sec. (settable in Tv or M)
41/1400 sec.
ISO (film speed)
Auto, High ISO Auto, ISO 80/100/200/400/800
equivalent
ISO equivalent 80160 (automatic, still), 80200
(sports) and 80,100, 200, 400 (manual)
Exposure metering
Evaluative, Center-weighted average, Spot
Metering frame is fixed to the center or linked
to the AF frame
center-weighted
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Digital Camera Specifications
Cannon S3 IS
Kodak C340
Focus Range
Normal 1.6 ft./50cm-infinity (WIDE), 3.0
ft./90cm-infinity (TELE)
Standard23.6 in. (60 cm) to infinity
Macro 3.9 in.-1.6 ft./10-50cm (WIDE)
Close-up wide528 in. (1370 cm)
Super Macro 0-3.9 in./0-10cm (WIDE)
Close up tele928 in. (2270 cm)
Color Modes
Vivid, Vivid Blue, Vivid Green, Vivid Red,
Neutral, Sepia, Black White, Positive Film,
Lighter Skin Tone, Darker Skin Tone, Custom Color
color, black and white, sepia
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Digital Camera Specifications
Cannon S3 IS
Kodak C340
Flash Range
Normal 1.6-17 ft./50cm - 5.2m (W), 3.0-13
ft./90cm-4.0m (T) Macro 1.0-1.6 ft./30-50cm (W)
(when sensitivity is set to ISO Auto)
wide211.8 ft (0.63.6 m) tele26.9 ft
(0.62.1 m)
Auto Focus
TTL Autofocus (continuous/single)
TTL-AF
Cost (on line)
328 - 850
109 - 227