5 Things to Know About Memory Cards

by Amanda Padgett on June 21, 2012

The following post is from Amanda of Everyday Elements:

things to know about memory cards

source: Everyday Elements

The last time I was here I talked about five things that should be in every camera bag. This time I want to talk about one of those items – memory cards.

What is so special about memory cards that a whole post could be devoted to them? They are holding your precious pictures until you can upload them to your computer. If you capture once-in-a-lifetime moments, like a wedding or a birth, if those images are lost they cannot be redone.

Format every time card goes back into a camera.

Memory cards must be formatted before using for the first time and each time they are put into different cameras. For example, if you have a Canon Elph 100 and a Canon Rebel, the SD card should be formatted each time it goes between the cameras.

Also it is wise to format cards (in camera, NOT on the computer) after uploading images to your computer to delete all the images at once and remove trace info from old images from the card.

Larger is not necessarily better.

Yes a 16G memory card can hold a lot more than a 4 or 8G memory card. However, on the flip side, you are basically “putting all your eggs in one basket.” What happens if that card fails?

For instance, you go on vacation and take a long a 16G card so that you can shoot all your family pictures on that one card and when you get home you suddenly get a card error – the card is corrupt. That type of loss would be a little easier to swallow if you had used three 4G cards so you at least had images from the other two cards.

Speed is important.

With DSLR cameras, if you want to be able to shoot multiple frames back to back, your camera needs that capability but you also need a fast memory card.

When card shopping for an SD card, look at the “speed class” on the packaging – class 2 is slowest and class 10 is fastest. For compact flash (CF) cards, the speeds range from 25 bps to 322 bps.

Think before turning off your camera.

Do not turn off your camera too soon after shooting because it may still be writing files to the card. Interrupting the process can cause the card to become corrupted (meaning you may lose all the images on the card).

Label each memory card.

Write your name and date purchased (if possible) on them. Your name so that if you are with other photographers, your cards are easily identifiable and so that you know the age of the card and when to replace it. Memory cards are not a buy-once-use-forever type of product; they do need to be replaced every few years.

Do you already prescribe to these tips? If so, do you have any other helpful tips regarding memory cards?

Amanda is a quirky, introverted mom of four who is passionate about helping others learn their cameras and editing software. She homeschools her four kids, ages 13 to 6, all of whom run away when they see her carrying her camera.

  • Kacey @ Well-Rounded Home

    Thanks for the info. I admit, I thought memory cards were a buy once, use forever type of thing–and other than the memory size, I had no clue there were other differences to look for.

    • Amanda Padgett

       Kacey, I used to believe that too until I started wondering about the life span of one and found that it definitely isn’t. Having the date on the back of mine helps me keep track.

  • http://adaywithlilmama.blogspot.com/ Mindy

    why format in camera and not format on the computer? my mentor/wedding photographer has told me otherwise.

    • Amanda Padgett

       Mindy, are you sure you’re not meaning deleting in camera vs on the computer? Many photogs believe in only deleting from the computer, not in camera.

      However, the formatting of the card should be done in camera so that your camera is the one “setting the structure” so to speak for how/what is placed on the card.

      I did some research for you and this post explains it better than I can: http://www.digicamhelp.com/accessories/memory-cards/erasing-and-formatting-a-memory-card/

  • http://purple-hippie.blogspot.com/ Amy

    I am also curious about formatting in camera vs on the computer.  I always format on the computer, and have never had an issue…  *Knock on wood.*  Does it really make a difference, as long as we format each and every time?

    • Amanda Padgett

      My answer is going to be the same as for Mindy’s question (below). Formatting memory cards is best done in camera so that specific camera you’re using it in is able to format it for that body. I have two cameras that take CF cards – a Nikon D700 and a Canon 50D. The cameras are vastly different and write different raw formats (one has .nef and the other .cr). It’s best to let the Nikon D700 format the card so it works best for it, and the same for the Canon 50D.

  • Jenn

    Great tips! I always format in-camera and it’s usually the first thing I do after I’ve dumped the files onto my laptop. One thing I did learn by way of happy accident is that Sandisk will replace broken memory cards, no questions asked. I was in my LCS and the two pieces of plastic that house the actual memory card popped apart. I was handed a replacement right then and there; not a policy of the store, but Sandisk’s warranty. Bonus!

  • Pat

    I have 3 cards and had no idea that they didn’t last “forever”

  • Tbitzan

    I have a total of 5 cameras and 8 cards!  Crazy, I know!

  • Cindy

    I, like Amanda, have not had any trouble with Lexar cards.  They were the first cards I bought and have been used the most but I have not had a download problem yet with them.  However I have had a couple of Sandisk cards (not as old as the Lexars) that are problematic.  So far I have been able to get the photos off them, but I am scared to use them again. I have 9 cards from 2 gig to 8 gig size.  Need to throw away 2 of the Sandisk cards though.

  • Lisa Pennington

    Great tips.  I never put much thought into my memory cards before. Thanks so much.  I especially love the one about using several smaller cards instead of one big one.  I never thought of that.  Lisa~

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