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All About Digital Cameras 2

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by

K Soliman

on 28 September 2016

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Transcript of All About Digital Cameras 2

NHS Digital 1
All About
Digital
Cameras 2

Parts of a Digital Camera
Outer
Settings

Let’s find…
The size of the opening in the lens when a photo is taken
When you hit the shutter release button of your camera, a hole opens up allowing your cameras sensor to catch a glimpse of the scene you’re wanting to capture
The larger the opening the more light gets in
The smaller the opening the less light gets in
Measured in F-stops
MANUAL settings:
Aperture
S
M
A
L
L

D
O
F
L
A
R
G
E

D
O
F
What is it?
The amount of your shot that will be in FOCUS
Large DOF – means most of your image will be in focus (background and foreground
Small DOF– means only part of your image will be in focus and the rest will be fuzzy
Depth of Field
How to control it…
Subject placing – closer to your main subject and further from its background
Use this if you want your portrait to stand out against the background
Zoom all the way in
APERTURE: use a small F-stop
Think of people in a line
Depth of Field
When would you want shallow DOF?

When would you want a large DOF?
f/22
f/2.8
Shallow Depth of Field = F stops of smaller numbers
Large Depth of Field = F stops of larger numbers
Ensures that the colors seen by a photographer, are reproduced in the photo.
Meaning WHITE is WHITE
Not blueish, greenish, or yellowish
Why does this happen?
White Balance
How fast the opening of your camera works
How LONG or SHORT the shutter stays open
Measured in fractions of a second
½, ¼, 1/8, 1/25, 1/250/ ….. 1/8000
MANUAL settings:
Shutter Speed
Fast Shutter Speed- Stops Movement
SLOW Shutter Speed- Captures Movement
Cool Effects
http://upload.wikimedia.org/wikipedia/commons/7/77/Shutter_speed_waterfall.gif
Let's find....
the DISP button
How many photos can you take?
What other information is important on the camera?
Movement Compensation
Nikon VR= vibration reduction
Canon IS= Image Stabilization
Pentax SR=Shake Reduction
Sony SSS=Super Steady-Shot
Features
Zoom- Digital or Optical?
Optical Zoom
Lens physically extends to magnify object
W= Wide angle
T= telephoto
Digital Zoom
Crops your image and magnifies result
Gives poorer results
Some cameras have both and will warn you when it changes to use digital zoom
SCENE AUTOMATIC MODES
SEMI-automatic modes
Sensors
The larger the sensor the better the image quality
Allows you to shoot more of a scene
The smaller the sensor, the less of the scene you shoot
So the More Megapixels I have...
the better my photo quality will be?
How can a 6mp SLR take a better
photo than a 10mp point and shoot?
BECAUSE SENSOR SIZE MATTERS
All pixels are not made the same
Larger sensors have larger pixels recording an image and do it better
SLRs have large sensors
Point and shoots have small sensors
Megapixels vs. Print Size
ALWAYS buy a memory card
Memory Cards: What kinds?
Types
SD (secure digital) small, reliable
SDHC (secure digital high capacity) greater storage capacity
MiniSD: 1/2 size of SD, small digital cameras or cell phones
CompactFlash: large and square-- range of speeds for SLRs
The faster the card, the more expensive
How big of a memory card do I need?
Disposable
alkaline- non rechargeable
cheap/unreliable
very short battery life
Camera Batteries
Rechargeable
Can be used over and over
Inexpensive
Longer battery life
Lithium batteries
Long battery life
More expensive
Rechargeable
Movement Compensation
Nikon VR= vibration reduction
Canon IS= Image Stabilization
Pentax SR=Shake Reduction
Sony SSS=Super Steady-Shot
Features
Zoom- Digital or Optical?
Optical Zoom
Lens physically extends to magnify object
W= Wide angle
T= telephoto
Digital Zoom
Crops your image and magnifies result
Gives poorer results
Some cameras have both and will warn you when it changes to use digital zoom
Once you delete photos from your camera.... are they really gone???
Some Questions
What happens when you FORMAT your memory card?
What should you do if you accidentally delete all of your photos?
Exposure = how light or dark an image is
*how much light is recorded by your camera sensor
Full transcript