PPT ABOUT PHOTO GRAPHY
Digital photography uses an array of electronic photodetectors to capture the image focused
by the lens, as opposed to an exposure on photographic film. The captured image is
thendigitized and stored as a computer file ready for digital processing, viewing, digital
publishing or printing.
Until the adventof such technology, photographs were made byexposing light
sensitivephotographic film, and used chemical photographic processing to develop and stabilize
the image. By contrast, digital photographs canbe displayed, printed, stored, manipulated,
transmitted, and archived using digital and computer techniques, without chemical processing.
Digital photography is oneof several forms of digital imaging. Digital images are also createdby
non-photographic equipment such as computer tomography scanners and radio telescopes.
Digital images can also bemade by scanning otherphotographic images
Choosing theBest Camera
•Nota once in a lifetimepurchaseanymore.
•Selectone which can do the job you want
Today and asperyour futurerequirement
somekinds of thingsbetter ormoreeasily
e.g., Sportsphotography vs. Close-upportraits.
TYPES OF CAMERAS
• WEB CAMERAS AND MOBILE CAMERAS
RESOLUTION AND PRINT
Resolution Avg. quality Best quality Resolution
0.5 megapixels 3x5
N/A 800 x 600
2 megapixels 8x10
3x5 in. 1600 x 1200
4 megapixels 11x14
5x7 in. 2300 x 1700
6 megapixels 16x20
8x0 in. 3000 x 2000
13x17 in. 3888+ x 2592+
•A technology that stabilizes the lens to
effectively reduce blur due to camera shake
How thecamera measuresthe amount of light
availableto exposea picture
variouspart of the picture, witha special
emphasisfor the centre.
•Spot: Readingsare takenat a specificpoint.
•Each cameramanufacturerhas itsown
a reference colourtogiveas truea whiteas
•AutoWB(AWB): thecamera determinesand
Somepreset white balance settings are
daylight, cloudy, tungsten, or fluorescent.
Speed, ISO, Noise
a hole or an opening
It causes variations in
the Depth of Field
within the image
Allows you to decidethe shutter speed(e.g.fast at 1/500 sec.for stop action
photography, or slow at 2 sec.for night photography), and the camera decides the
Allows you to choose the aperture (e.g. large at F1.8 for portrait, of small
at F16 for landscapes).
You have complete creative control in selecting both
the shutter and aperture.
Alldigital cameras usuallyhave an Auto mode: the
camera decides for you the best shutter
Primary function isto allow a large depth of field.
Landscape mode tells the camera to default to a
large Depth of Field (Small Aperture)–f16.
This mode is notwell suited for full-length
portraits orgroups of people
Portrait mode tells the camera to default to a:
•Small Depth of Field (Large Aperture)– f1.8
tells the camera to default its settings toward
capturing images faster
This is done by:
•Increasing Shutter Speed
This preset slows down the shutter speedto
allow a lot of light into the camera.
•Both the foreground and backgroundof the image are properly
•very useful in taking low-light
images where you donot want
the background to beblack
EXIF (exchangeable image file)
• EXIF (exchangeable image file) data is a record of what camera
settings were used to take a photograph.
EXIF data stores information like camera model, exposure, aperture,
ISO, what camera mode was used .....
To interpret this EXIF data, you will need an EXIF viewer. There are
many ways to go about this. Your image processing program should
provide that functionality within the program.
For beginners, reading an images EXIF data can be a very useful
The eye ofthe personlookingatthe imagecan’thelp butbedrawntothe
element oftheimage you’vetaken....the subject!
“makeyoursubjectthe strongestpointof yourphotoeven thoughit might
takeuponlyasmall partoftheoverall image”....
WhenI’m attemptingtotakeashowwith aminimalist feelto itI keep
Zoom In orout...
19th century studio camera
standing on tripod and
Box camera, one of
the first mass-
cameras using film,
Evolution of the camera
Leica-II, one of
the first 135
1949 – the
Ixus class, c.2000.
Nikon D1, the
first digital SLR used in
journalism and sports
private images globally,