Camera Buying

Which Features Do You Want?

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Choosing the features you want on your digital camera is an important part of deciding which digital camera to buy.

While no means complete the following features or options are among the most common.

Which Features Do You Want?

To help you decide which features are most important to you, I have included a brief description of the feature and tips on what it is designed to do.


Zoom Lens

A zoom lens is a nice feature to have on any digital camera. Optical zoom actually changes the focal length of the lens from a wide angle view to a telephoto view. It is like having several lenses in one.

Digital zoom should not even be considered when you are deciding on how much zoom you want. Digital zoom merely enlarges a portion of the image which can cause a loss of image quality.

Auto Modes

Auto modes provide you with a point and shoot convenience that is optimized for specific types of scenes, such as portraits, landscapes, night scenes, panoramas and even short video clips. Macro mode for close ups of small objects is also a very popular feature to consider.

Semi-auto Modes

In addition to the fully automatic scene modes, there are also some semi-automatic modes you may find useful. The most common of these are shutter priority and aperture priority. These two modes give you more control over the auto exposure function of your digital camera.

Aperture Priority

With aperture priority you select the aperture (f/stop) and the auto exposure control will adjust the the shutter speed to give you the correct exposure. Because the f/stop chosen affects depth of field, being able to select the aperture allows you more control over the field of sharpness in your scene.

If you want to reduce the depth of field, you can select a larger aperture opening and the auto exposure will select a faster shutter speed to compensate. If more depth of field is needed, you can choose a smaller f/stop and the shutter speed time will be increased to provide the proper exposure.

Shutter Priority

Shutter priority lets you control the time of the exposure and the auto exposure then adjusts the f/stop settings to provide the proper exposure. If you are shooting a moving subject you can select a faster shutter speed to freeze the action for a sharp image.

At times you may want to show the motion of a moving subject, such as a water falls or panning on a moving car while blurring the background. By choosing a slower shutter speed you can convey a feeling or movement or speed in a still photo. Shutter priority can give you this kind of creative control.

Full Manual Control

For those who want to be in full control of the exposure settings on their camera, having a manual option is the ideal choice. Manual mode will allow you to choose both the f/stop and shutter speed. On some advanced cameras manual focus may also be an option.

Manual control over the exposure settings is an option that is usually only important to more advanced photographers. Certain studio applications or special lighting effects may require exposure settings that would not be possible with the auto mode controls alone.

These advanced options are not the only ones offered, but they are the most common ones. You’ll have the point and shoot simplicity of a fully automatic camera with the added benefit of being able to advance your photography to new and interesting levels.

Here’s to better photography …

Al Hannigan

Al Hannigan

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Photography Basics

Photo Composition

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Photo composition is all about the art of subjective arrangement … what to do with all that stuff. Composition is about choices.

What is your subject? What do you include and what do you leave out? And how do you arrange all the elements that are included?

Composition in photography uses many of the same guidelines used in painting, film making and similar visual arts.

The Mind Filters What We See

Whenever we see something, our eyes take in everything within our angle of view. The mind processes and evaluates this incoming data, compares it to past experiences, and reaches certain conclusions about what your seeing.

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Catching the Light
Photography Basics

Using Light in Photography

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“Photographers Catch the Light”

The word photography means: “writing with light”. Indeed, without light there would be no photography…and not much else either. Light is a part of all visual art, but photography is unique in that it actually records light.

Catching the Light
Catching the Light

When you take a photograph, you are quite simply recording the light that illuminates the objects you see.


“I knew, of course, that trees and plants had roots, stems, bark, branches
and foliage that reached up toward the light. But I was coming to realize
that the real magician was light itself“.
…Edward Steichen…



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Digital Camera Lessons

Digital Camera Image Sensor

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An image sensor is the digital equivalent to film in a conventional camera.

Unlike film, however, the image sensor is built into the digital camera and cannot be changed for different situations.

The most common sensors used today in digital cameras are the CCD (Charged Couple Device) and the CMOS (Complementary Metal Oxide Semiconductor).

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Photography Basics

White Balance and Color Temperatures in Photography

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The white balance feature on digital cameras is designed to correct for different kinds of light, such as sunlight, shade, indoor light, etc.

Each of these types of light have different variations of color temperature and the camera must correct for this.

Color Temperature is a measurement of the color of light. Even though our eyes see pretty much the same colors in most of the common kinds of light…such as daylight, indoor light, florescent light…these light sources are in fact quite different.

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Photography Basics

Lens Focal Length

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Focal length is a term that refers to the optical length of a lens. It is the distance, measured in millimeters (mm), from the optical center of the lens to the image sensor or film plane.

Lens Focal Length

Mathematical formulas are used that take into account the size of the sensor, or image area, and its distance from the center of the lens to determine the precise number of mm of each focal length.

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Photography Basics

Camera Shutter Speeds

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In this photography lecture we’ll discuss camera shutter speeds. The shutter speed is one of the controls that determines the exact amount of exposure your film or image sensor receives.

Shutter speed controls the time of an exposure by controlling exactly how long the aperture remains open. The shutter speed also has other effects on your pictures which will be covered as well.

The following is a list of the full shutter speeds, starting with 1 second:

1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500, 1/1000, etc.

Each of the above shutter speeds is 1/2 the amount of time as the previous speed.

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