Digital Camera Memory Cards

Digital Camera Memory Cards

Does it really make a difference what size memory card you use?  To your camera, no; to you, however, it could mean the difference between getting the picture you want or running out of space on your memory card.

When choosing the most logical size, take into account how many pictures you usually take at a time.  Your needs if you are a world traveler will be different from those of a person who only uses a camera for holiday get-togethers.  You also need to decide how big the files are of the pictures you take.  Smaller files such as pictures for online will take less space and enable you to fit more on a card.  Larger files for printing will need more room.
If you have a 2 mega-pixel camera, 128MB is usually enough. For a 3 or 4-megapixel camera, a 128MB or 256MB memory card is usually plenty. For a 5-megapixel camera, start with a 256MB memory card.

Here's a rough guideline of how many pictures a flash memory card can hold:
*A 128MB flash memory card can store about 21-41 large, uncompressed images or up to 100 small, compressed images.  This is good enough for most photographic needs.
*A 256MB card will store about twice that, 42-82 large pictures and nearly 200 smaller ones.  Important events like weddings and once in a lifetime events might warrant this size just to make sure you don’t miss that one special moment.
A 1GB card has room for nearly 4 times as much as a 256MB card, If you are planning a long vacation with a lot of picture taking, this might be best with the capacity to hold 168-328 large images and a total of close to 800 smaller images.
Whatever you decide, remember you can always use several smaller cards and just change them when they are full.  It only takes a few seconds to switch memory cards, so don’t panic if you don’t have a large memory card.

Digital Zoom Versus Optical Zoom

Digital Zoom Versus Optical Zoom

Many digital cameras offer both digital and optical zoom.  These two often confuse the average camera buyer, until you know what you’re looking at.

Optical zoom works much like the zoom lens on a 35 mm film camera. It changes the length of your camera’s lens and draws the subject closer to you.  The optical zoom keeps the quality of the picture. Digital zoom works differently. It simply takes the picture and crops it then enlarges the part that is left.  It causes the quality of the photo to be reduced, sometimes greatly.

What this means in terms of output is you may have a larger view of an object with the digital zoom, but chances are your image will become unfocused.  Details will become lost.  It is actually best to turn off the digital zoom feature of your camera if possible.  This will prevent you automatically zooming in too close as the digital zoom is often an extension of the optical.

There are a couple of things you can do if you want a closer view of a subject but want the quality of your picture to still be good.  Try moving in closer when you take the picture.  Often only a foot or two will do the trick.  If this isn’t possible, you can set your camera to take a picture at its highest file size.  This will result in a photo that can be cropped to include only your desired subject, yet allow for an image that is still clear.

Digital zoom has its place.  It can be used if the only destiny of your photo is the internet.  Photos online can be a much lower quality in the camera and still appear acceptable when sent through e-mail or posted on a web gallery.  If your goal is printing, however, seek a camera that has a greater optical zoom and turn off the digital zoom.  Your pictures will be better in the end, even if they are not as close up.