April 02, 2008

Just how many digital images can I take?

NUMBER OF IMAGES STORED ON A DIGITAL CARD EXPLAINED:

The number of pictures you can take varies depending on your camera model and complexity of the scene being photographed. To calculate how many pictures your card can hold, divide the capacity of your card by the average file size of your images. For example, if you have a 256MB card, and use a camera that has an average file size of 1.2MB, then 256 divided by 1.2 gives you approximately 213 pictures. As you change modes on your camera, the number of images will increase if you shoot in a lower resolution mode, and decrease if you shoot in a higher resolution mode.

OPTICAL AND DIGITAL ZOOM:

If you shoot pictures of sports or anything where the action isn’t right in front of you, you will need a camera with a decent zoom telephoto function. A camera with a fairly high (10-12X) optical zoom is most favorable and will yield the best quality photograph. Optical zoom simply means that the camera is using its optics (lenses) to perform the magnification of the subject and enlarging it to create a good image of the subject.

Digital zoom sounds high-tech, but it will yield a lower quality image. For those impressed by numbers, a camera with a 10X optical zoom and a 64X digital zoom is only as good as the optical zoom – if you want a quality image. Digital zoom is created by the software in the camera, and adds pixels to the image to be able to artificially enlarge the subject. This adding of pixels reduces the quality of the image and only give the illusion that it is enlarged.

The basic rules still apply:

  • Get as close to your subject as you can
  • Use the capabilities of the camera to create the image
Don’t shoot images you know can’t be reproduced at high quality or printed

Take the time to REALLY learn your camera and lenses - and all the capabilities and functions involved.


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