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Basic
photography tips: how to use aperture, ISO sensitivity, metering
modes, shutter speed, basic shooting modes on your digital cameras
Understanding
Aperture and Shutter Priority Modes on Your Digital Camera
Executive Summary about Aperture and Shutter Priority Modes
By Andrew Goodall
Aperture
and shutter speed settings can seem confusing for a new photographer.
Luckily your semi-automatic settings, Aperture Priority and
Shutter Priority, make them a little easier to understand.
Earlier SLR cameras (film) were fully manual. All DSLR cameras
and most compact digital cameras
have manual and automatic modes, but they also offer semi-automatic
modes. If you have Aperture Priority and Shutter Priority
on your camera, but never quite understood what they were
for, this article is for you.
First
up, what are Aperture and Shutter Speed? Aperture also controls
depth of field, which affects how much of your picture is
in focus. Shutter speed is the duration of the exposure. Shutter
speed also controls how you capture movement in a photo. The
trick is to combine your aperture and shutter speed settings
for the best result. To help you manage the challenge, you
now have the option of Aperture and Shutter Priority.
Remember
that aperture controls depth of field. So if the range of
focus is the critical element in your photo, choose aperture
priority. You can set a small aperture to maximise the depth
of field, or a large aperture to concentrate the focus on
the subject. Shutter speed controls movement in a photo. If
controlling a moving subject is the critical aspect of your
picture, choose shutter priority. This will allow you to set
a fast shutter speed to freeze the moving subject, or a slow
shutter speed to capture blurred motion. Whichever shutter
speed you choose, the camera will take care of the aperture
so your photo is correctly exposed.
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Understanding
Digital Cameras Exposure
Set the film speed dial to ISO 200; (If you are a film
shooter, do this even if you have a roll of film in your film camera
that is not ISO 200, but don’t forget to set the ISO back
to the correct number when we’re done here.) Write down that
shutter speed. Whether you’re in manual mode or auto-aperture-priority
mode, you’ll see that your light meter is indicating a different
shutter speed for a correct exposure. Once again, write down this
shutter speed. When you change from ISO 100 to ISO 200 your shutter
speed changed: from 1/125s to 1/250s or perhaps something like from
1/160s to 1/320s. Just as each halving of the shutter speed is called
1 stop, each change from ISO 100 to ISO 200 to ISO 400 is considered
a 1-stop increase (an increase of worker bees). |
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Selling
Stock Photography - Make Money by Toni Godwin
Selling stock
photography is a huge business. There are many agencies that need high quality
stock photos but are unable to take them themselves or it's not in their budget
to hire a professional photographer. They have to turn to stock photo agencies
to find the photo they need for their project. These agencies are made up
of thousands of photographers who submit their pictures for approval. The
pictures are reviewed against many standards to make sure they are high quality.
Once accepted, the photo is added to their photo libraries and their photo
search. The photographer earns a percent of every sell for as long as the
picture remains in the photo agencies gallery. Read
more...
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