Types of digital cameras
• Webcams/phone cams
• Point and shoot
• Advanced Consumer
• Prosumer dSLR
• Professional dSLR
Wideangle zoom lens
A wideangle digital camera lens typically covers
a focal range from around 12-24mm or 16-
35mm, and allows you to fit landscape scenes,
architecture or anything else where you need a
wide angle of view.
The standard digital camera lens offers a focal
length of around 50mm, which translates to
around 75mm on many DSLRs. As such, a 50mm
camera lens lends itself perfectly to portraiture,
particularly as such lenses often offer wide
maximum apertures to create shallow depth of
Superzoom digital camera lenses are a popular
choice for keeping on your camera, as they span
a wide focal range, from wideangle right
through to telephoto. Typically this will begin at
around 28mm and culminate at close to 270 or
Telephoto zoom lens
A telephoto digital camera lens gets you closer
to the action, and so is ideal for sports and
wildlife where you may need to keep your
distance. These can either been prime or zoom
lenses, and usually cover a focal range of
between 100mm to 400mm.
Macro lenses can focus closer to your subject
than a conventional lens allows, which allow you
to capture plenty of intricate details.
Fisheye lenses offer an exceptionally wide angle
of view but are purposefully distorted to create
the ‘fisheye’ effect. They come in two different
varieties: full-frame and circular, which
respectively capture an image to fill the whole
frame and a circular image contained within the
• What are pixels? The word "pixel" means a picture
element. Every photograph, in digital form, is made up
of pixels. They are the smallest unit of information that
makes up a picture. Usually round or square, they are
typically arranged in a 2-dimensional grid.
• In the next image, one portion has been magnified
many times over so that you can see its individual
composition in pixels. As you can see, the pixels
approximate the actual image. The more pixels you
have, the more closely the image resembles the
For more information, visit http://www.ultimate-
• F-NUMBERS: A series of numbers designating the
apertures, or openings at which a lens is set. The
higher the number, the narrower the aperture.
For example, f/16 is narrower (by one stop) than
f/11--it lets in half as much light. An f-number
range might be f/2.8, f/4, f/5.6, f/8, f/11...To find
the next aperture in a narrowing series, multiply
by 1.4. F-numbers are arrived at by dividing the
diameter of the opening into the focal length of
the lens, thus a 10mm diameter opening on a
110mm lens is f/11. Alternately used with f-stops.
Setting the Right F-Stop for Your
• Use an almost-wide-open f-stop to boost
• Adjust your depth of field by moving f-stops.
• Avoid too-small f-stops.
• A prefix on film speed ratings that stands for
International Standards Organization, the
group that standardizes, among other things,
the figures that define the relative speed of
• Rule of Thirds
– The rule of thirds is the simplest rule of
composition. All you do is take your frame and
overlay a grid of nine equal sections. This means
you split the vertical space into three parts and
the horizontal space into three parts.
• Photographing your subject straight-on is
sometimes the right choice, but you can
create visual impact by moving the camera
left, right, above, and below.
Tagging and Descriptions
• Tags are “Subject headings” (flickr)
• Tagging someone (Facebook) - considerations
• Image descriptions, titles, etc.
• Consider image size
• Make a call to confirm
• Only send 2-3 images per
• Best option: upload to site
and share URL via email
• NOTE: you can share photo
albums from Facebook to
those not on Facebook!
• Dr. Curtis R. Rogers
• Pamela Hoppock
• Library Development