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In todays modern digital and film cameras we have several choices in how we will take photographic images.
With even the most expensive cameras we can choose to place the mode
switch on Full Auto, or Program mode. This lets the camera decide
how to expose the image and save the image as a digital file.
Program Mode allows some user interaction with the camera settings.
- You can manually select the ISO (Sensitivity) of the camera.
- You can turn on or off Auto Focus.
- You can tun on, or off Image Stabilization for the attached lens.
- You can turn on Flash and adjust Flash compensation for the subject photographed.
- You can set Exposure Compensation to + or - values for the subject.
In short this mode becomes a glorified Point and Shoot camera. |
In Auto, or Full Automatic mode the camera takes total control in making an image exposure.
- ISO (Sensitivity is automatically selected based upon the cameras' exposure measurements).
- The Aperture (Lens opening) is automatically selected based upon the cameras' exposure measurements.
- The Shutter Speed is automatically selected based upon the cameras' exposure measurements.
- Focus is automatically selected based upon the cameras' exposure measurements.
In short you have a fully automatic Point and Shoot camera with the
camera making all the decisions, except what you see in the view
finder, or LCD panel on the back of the camera.
To create photographs as an art form you must take the camera out of Auto and Program Mode. |
