introduction to digital photography · 2014. 10. 17. · introduction to digital photography....
TRANSCRIPT
Introduction to Digital
Photography
Digital camera – A camera that
captures the photo not on film, but in
an electronic imaging sensor that
takes the place of film.
Using a Digital Camera
Technology rapidly growing as more people become both computer and web savvy.
We will be using
Canon
PowerShot’s in
multiple models.
Liquid Crystal Display (LCD)
Delay Between Shots
The amount of time (measured in seconds) it
takes the camera to process and store an
image when shooting in normal mode, at the
camera’s maximum resolution setting also
known as recycle time or lag time.
Try taking multiple shots one after another
with your digital camera. How much lag time
is there?
Shooting-The Basics
Check that the camera is in Shooting mode.
Turn the dial to AUTO
Aim the camera at the subject you wish to shoot
Use the zoom lever to achieve the desired composition
Press the shutter button halfway
Press the shutter button all the way
Megapixels
Probably the most significant feature when
choosing a digital camera is the number of
megapixels, which determines the quality of
your photos.
Higher the megapixels the better off you are.
Nowadays cameras are up to 14 megapixels.
How many megapixels does our camera have?
Shooting Mode Dial
Image Zone
Portrait-subject sharp, background blurry
Landscape-landscape scenes
Night Scene-human subject against night sky
Fast Shutter-fast moving objects
Slow Shutter-moving objects blurred
Movie-sound and video
Shooting Mode Dial (con’t)
Special SCN
Foliage-flowers, leaves, trees
Snow-subjects against backdrop of snow
Beach-scenes by the sea or on the beach
Fireworks-fireworks shot clearly
Underwater-use with waterproof case
Indoor-indoor shots with fluorescent lighting
Kids and Pets-subjects that move around
Night Snapshot-subjects against night skies
Macro Mode
Normal mode Macro mode
White Balance
•WB corrects for different lighting conditions
Resolution
A digital camera is made up of hundreds of
thousands of tiny squares, called pixels.
Unlike that of traditional film where the dots are
known as grain.
If supplying
photos for a
website then you
would shoot at a
low resolution.
-refers to the number of pixels.
Why is resolution important?
The higher the resolution, the better the picture.
Resolution is expressed in pixels, and refers to the “true” resolution of the camera. Resolution Range: “S” 640 x 480 Pixels (monitors) = Minimum Computer Resolution. GREAT for websites
“L” 4000 x 3000 Pixels = Extreme resolution. Capable of huge prints and cropped, photo-quality 8” x 10”s from a fraction of the original image file.
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
Low Resolution Image
High Resolution Image
Rapid-Fire Shots
Rapid-Fire is also known as Burst Mode or
Continuous Shooting Mode.
This feature allows you to take multiple rapid-fire
shots with one touch of the exposure button. This can
be very useful feature when shooting subjects in
motion, such as during a sporting event.
Flash Option on a digital camera
Off/On/auto-This refers to the basic flash
functions, where the flash is always off,
always on for “fill-ins” (for example: bright sky
behind a subject will fill-in dark shadows on
the face), or set to fire automatically when
needed.
Red-Eye Reduction-This refers to a mode of
flash that helps prevent the appearance of
people with red eyes in the picture.
Downloading images to the Computer
Use the supplied interface cable to connect the computer’s USB port to the camera’s DIGITAL terminal
Slide the camera’s mode switch to playback
Turn the power on
Either copy the images from the SD card to your computer or move them from one to the other
Image Compression & File Formats
JPEGs (.jpg)-– Most common digital camera image
format used for images with continuous tone
changes such as photos. (* This is the one we will be using)
GIFs (.gif)- images with solid color such as text
banners. Primary use are websites. Smallest file size.
PDF (.pdf)-stands for Adobe Acrobat’s Portable
Document Format, a system for creating documents
that can be read cross-platform.
CCD Raw (.raw) – An uncompressed image format
that contains all of the data picked up by the image
sensor.
Now it’s your turn…try to
accomplish the following
Take a picture with date option “on”
Take a picture with date option “off”
Take a picture with the sepia option, also try black & white option
Photograph 1 object in “normal mode”
Then photograph the same object in “macro mode”
Take 3 pictures, but change your pixel settings (small, medium (1, 2, or 3), large)
A “Continuous Motion” or “Rapid Fire” option (set to 5)
Put the grid option “on” so it shows up on your screen and take a picture.
Now download off of camera and transfer into your H: Drive in a folder labeled Camera Activity and label images accordingly.